Title: The Best Hotels Closest to O'Brien's Castle in Inisheer - 2025 Updated Prices | Expedia.co.uk [Inisheer Travel Guide](https://expedia.co.uk/Inisheer.dx1604)[Holiday Rentals in Inisheer](https://expedia.co.uk/Inisheer-Holiday-Rentals.d1604.Travel-Guide-HolidayRentals)[Flights to Inisheer](https://expedia.co.uk/Cheap-Flights-To-Inisheer.d1604.Travel-Guide-Flights)[Things to do in Inisheer](https://expedia.co.uk/Things-To-Do-In-Inisheer.d1604.Travel-Guide-Activities)[O'Brien's Castle Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-OBriens-Castle.d6085951.Car-Hire-Guide)[O'Brien's Castle Holidays](https://expedia.co.uk/OBriens-Castle-Inisheer.d6085951.Attraction) ![Default HTG hotel image](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_lodging_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Search Hotels Near O'Brien's Castle, Inisheer - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__price_find.svg) ### Change your mind Book hotels with free cancellation - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Treat yourself Save instantly and earn perks with One Key [Learn about One Key](https://www.expedia.co.uk/welcome-one-key) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__bed.svg) ### Be picky Search almost a million properties worldwide ## Check prices for these dates Tonight [10 Nov - 11 Nov](https://www.expedia.co.uk/Hotel-Search?regionId=6085951&startDate=2025-11-10&endDate=2025-11-11&adults=2&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) Tomorrow [11 Nov - 12 Nov](https://www.expedia.co.uk/Hotel-Search?regionId=6085951&startDate=2025-11-11&endDate=2025-11-12&adults=2&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) This weekend [14 Nov - 16 Nov](https://www.expedia.co.uk/Hotel-Search?regionId=6085951&startDate=2025-11-14&endDate=2025-11-16&adults=2&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) Next weekend [21 Nov - 23 Nov](https://www.expedia.co.uk/Hotel-Search?regionId=6085951&startDate=2025-11-21&endDate=2025-11-23&adults=2&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) Recommended Price (low to high) Distance Property class ## Top Trending Hotels Near O'Brien's Castle ![Front of property](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/998fbb69.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Breakfast area](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/b2621d4c.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Front of property](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/7654b90c.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Desk, free WiFi, bed sheets](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/c68355b4.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Glasha Meadows 6.8 mi from O'Brien's Castle 9.4/10 Exceptional (138) "Beautiful views. Delicious breakfasts! I would definitely stay there again. " ![United States](https://a.travel-assets.com/egds/marks/flags/us.svg) Jeremy £87 includes taxes & fees 12 Nov - 13 Nov [](https://www.expedia.co.uk/Doolin-Hotels-Glasha-Meadows.h6659936.Hotel-Information) ![Hypo-allergenic bedding, desk, iron/ironing board, free WiFi](https://images.trvl-media.com/lodging/6000000/5960000/5950600/5950551/7ab34a84.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![2 restaurants, lunch, dinner, brunch served; international cuisine ](https://images.trvl-media.com/lodging/6000000/5960000/5950600/5950551/95d86d83.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Check-in/check-out kiosk](https://images.trvl-media.com/lodging/6000000/5960000/5950600/5950551/397aa819.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Exterior](https://images.trvl-media.com/lodging/6000000/5960000/5950600/5950551/742fc980.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Hotel Doolin 6.7 mi from O'Brien's Castle 9.4/10 Exceptional (191) "Lovely hotel in the heart of town with lots of free parking out back. Quick checkin and good size, clean, warm rooms with everything you could need. It’s attached to Fitz’s pub for breakfast, dinner and wonderful live local music. Everything is walkable and the locals are beautiful. " ![Australia](https://a.travel-assets.com/egds/marks/flags/au.svg) Marie £137 includes taxes & fees 11 Nov - 12 Nov [](https://www.expedia.co.uk/Doolin-Hotels-Hotel-Doolin.h5950551.Hotel-Information) ![Front of property](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/3c673970.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Dining](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/6940bf9d.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Combined shower/bathtub, towels](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/fbdfdc2d.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Iron/ironing board, free WiFi, bed sheets](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/2534e496.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Hotel Doolin Houses 6.7 mi from O'Brien's Castle 9.6/10 Exceptional (8) "The place was perfect for our family of 5 adults -- convenient location, really friendly folks checking us in and out (even sent us on our way with a fresh-baked loaf of brown bread!), and spotless rooms. Only wish we'd had more time there and in Doolin ..." ![United States](https://a.travel-assets.com/egds/marks/flags/us.svg) Elizabeth £391 includes taxes & fees 10 Dec - 11 Dec [](https://www.expedia.co.uk/Doolin-Hotels-Pipers-Chair-Self-Catering-Houses.h96041322.Hotel-Information) ![Terrace/patio](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/934654c3.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![2 bedrooms, premium bedding, pillow-top beds, individually decorated](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/54b62509.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Luxury Suite | 2 bedrooms, premium bedding, pillow-top beds, individually decorated](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/ab629077.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Point of interest](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/baa2f013.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Luxury Lodges in Doolin Village 6.6 mi from O'Brien's Castle 10/10 Exceptional (8) "Incredible location and host's. They were able to recommend excellent dining and things to do. You will not regret booking this amazing property. We sat in the hot tub one night watching a castle in the distance fade into the sunset. " ![United States](https://a.travel-assets.com/egds/marks/flags/us.svg) John £538 includes taxes & fees 11 Nov - 12 Nov [](https://www.expedia.co.uk/Doolin-Hotels-Luxury-Lodges-In-Doolin-Village.h92137772.Hotel-Information) ![Apartment | Beach](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/3d061d59.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Apartment | Living room | 30-inch TV with digital channels](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/c7119194.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Apartment | Private kitchen | Fridge, microwave, oven, stovetop](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/c26e6b3b.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Apartment | Private kitchen | Fridge, microwave, oven, stovetop](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/8589777e.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### 10mindrivecliffsofmoher-cozy2br-parking-wifi 11.7 mi from O'Brien's Castle 9.4/10 Exceptional (11) "Nice spot " ![United States](https://a.travel-assets.com/egds/marks/flags/us.svg) Christine £187 includes taxes & fees 12 Nov - 13 Nov [](https://www.expedia.co.uk/Lahinch-Hotels-Ocean-Breeze-Apartment.h50700447.Hotel-Information) Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply. [View all properties](https://expedia.co.uk/Hotel-Search?startDate=2025-11-24&endDate=2025-11-25®ionId=6085951&adults=2&sort=RECOMMENDED&openPlayBack=true) ## Hotels close to O'Brien's Castle with a pool ![Front of property](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/998fbb69.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Breakfast area](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/b2621d4c.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Front of property](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/7654b90c.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Desk, free WiFi, bed sheets](https://images.trvl-media.com/lodging/7000000/6660000/6660000/6659936/c68355b4.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Glasha Meadows 6.8 mi from O'Brien's Castle - Pool 9.4/10 Exceptional (138) £87 includes taxes & fees 12 Nov - 13 Nov [](https://www.expedia.co.uk/Hotel-Search?startDate=2025-11-12&endDate=2025-11-13&selected=6659936&PinnedHotelID=6659936&HadPinnedHotel=true®ionId=6085951&adults=2&amenities=POOL&openPlayBack=true) ![Front of property](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/3c673970.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Dining](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/6940bf9d.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Combined shower/bathtub, towels](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/fbdfdc2d.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Iron/ironing board, free WiFi, bed sheets](https://images.trvl-media.com/lodging/97000000/96050000/96041400/96041322/2534e496.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Hotel Doolin Houses 6.7 mi from O'Brien's Castle - Pool 9.6/10 Exceptional (8) £391 includes taxes & fees 10 Dec - 11 Dec [](https://www.expedia.co.uk/Hotel-Search?startDate=2025-12-10&endDate=2025-12-11&selected=96041322&PinnedHotelID=96041322&HadPinnedHotel=true®ionId=6085951&adults=2&amenities=POOL&openPlayBack=true) ![Terrace/patio](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/934654c3.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![2 bedrooms, premium bedding, pillow-top beds, individually decorated](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/54b62509.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Luxury Suite | 2 bedrooms, premium bedding, pillow-top beds, individually decorated](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/ab629077.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Point of interest](https://images.trvl-media.com/lodging/93000000/92140000/92137800/92137772/baa2f013.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Luxury Lodges in Doolin Village 6.6 mi from O'Brien's Castle - Pool 10/10 Exceptional (8) £538 includes taxes & fees 11 Nov - 12 Nov [](https://www.expedia.co.uk/Hotel-Search?startDate=2025-11-11&endDate=2025-11-12&selected=92137772&PinnedHotelID=92137772&HadPinnedHotel=true®ionId=6085951&adults=2&amenities=POOL&openPlayBack=true) ![Apartment | Beach](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/3d061d59.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Apartment | Living room | 30-inch TV with digital channels](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/c7119194.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Apartment | Private kitchen | Fridge, microwave, oven, stovetop](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/c26e6b3b.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Apartment | Private kitchen | Fridge, microwave, oven, stovetop](https://images.trvl-media.com/lodging/51000000/50710000/50700500/50700447/8589777e.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### 10mindrivecliffsofmoher-cozy2br-parking-wifi 11.7 mi from O'Brien's Castle - Pool 9.4/10 Exceptional (11) £187 includes taxes & fees 12 Nov - 13 Nov [](https://www.expedia.co.uk/Hotel-Search?startDate=2025-11-12&endDate=2025-11-13&selected=50700447&PinnedHotelID=50700447&HadPinnedHotel=true®ionId=6085951&adults=2&amenities=POOL&openPlayBack=true) ![Living area](https://images.trvl-media.com/lodging/122000000/121370000/121369300/121369241/254f4588.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Private kitchen](https://images.trvl-media.com/lodging/122000000/121370000/121369300/121369241/0426b2fa.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Living area](https://images.trvl-media.com/lodging/122000000/121370000/121369300/121369241/w660h436x0y4-52ed1597.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Room](https://images.trvl-media.com/lodging/122000000/121370000/121369300/121369241/da82f2e2.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### The Cliffs of Moher Holiday House 6.9 mi from O'Brien's Castle - Pool [](https://www.expedia.co.uk/Hotel-Search?startDate=2025-11-24&endDate=2025-11-25&selected=121369241&PinnedHotelID=121369241&HadPinnedHotel=true®ionId=6085951&adults=2&amenities=POOL&openPlayBack=true) [See more properties](https://www.expedia.co.uk/Hotel-Search?startDate=2025-11-24&endDate=2025-11-25®ionId=6085951&adults=2&sort=RECOMMENDED&amenities=POOL&openPlayBack=true) ## Top O'Brien's Castle Hotel Reviews ![Galway Bay Hotel](//images.trvl-media.com/lodging/1000000/110000/107000/106984/e57bde71_y.jpg) ### Galway Bay Hotel 10/10 Excellent "Great" [](https://expedia.co.uk/Galway-Hotels-Galway-Bay-Hotel.h106984.Hotel-Information) ![The Twelve Hotel](//images.trvl-media.com/lodging/2000000/1600000/1597600/1597580/d2ac214d_y.jpg) ### The Twelve Hotel 10/10 Excellent "The folks there were just awesome! We were greeted with a handwritten note by Isabella along with a homemade treat! The location was great. The room was enormous and the bed comfy. Breakfast was a real treat! We loved being so close to the water and would definitely stay there again. It was a perfect location for our day trip to Kylemore Abbey! " [](https://expedia.co.uk/Galway-Hotels-The-Twelve-Hotel.h1597580.Hotel-Information) ![Menlo Park Hotel](//images.trvl-media.com/lodging/1000000/530000/520900/520812/9ca25887_y.jpg) ### Menlo Park Hotel 10/10 Excellent "Great hotel" [](https://expedia.co.uk/Galway-Hotels-Menlo-Park-Hotel.h520812.Hotel-Information) ![The Galmont](//images.trvl-media.com/lodging/1000000/670000/660800/660779/a5b608c0_y.jpg) ### The Galmont 10/10 Excellent "The Galmount hotel is fab. The spa is something else. Staff so lovely. Super brekkie. Excellent food in bar and restaurant. Spacious, comfortable rooms. Couldn’t get better location. Staff so accommodating too. Can’t fault it." [](https://expedia.co.uk/Galway-Hotels-The-Galmont.h660779.Hotel-Information) ![The Dean Galway](//images.trvl-media.com/lodging/76000000/75710000/75709900/75709839/ae453578_y.jpg) ### The Dean Galway 10/10 Excellent "Clean, close to town, bar and food fab" [](https://expedia.co.uk/Galway-Hotels-The-Dean-Galway.h75709839.Hotel-Information) ![Connemara Coast Hotel](//images.trvl-media.com/lodging/1000000/90000/83500/83441/ac63f6e8_y.jpg) ### Connemara Coast Hotel 10/10 Excellent "This is my 2nd stay at this hotel. I find it fantastic, staff are extremely attentive, rooms are lovely, beds are so comfortable.Breakfast is outstanding. I am looking forward to booking again next year" [](https://expedia.co.uk/Galway-Hotels-Connemara-Coast-Hotel.h83441.Hotel-Information) ![Lahinch Coast Hotel & Suites](//images.trvl-media.com/lodging/2000000/1700000/1695500/1695484/1676a104_y.jpg) ### Lahinch Coast Hotel & Suites 10/10 Excellent "Friendly, helpful staff and a clean generous sized bedroom and bathroom." [](https://expedia.co.uk/Lahinch-Hotels-Lahinch-Coast-Hotel-Suites.h1695484.Hotel-Information) ![Cappabhaile House](//images.trvl-media.com/lodging/4000000/3090000/3081200/3081187/1c1506b2_y.jpg) ### Cappabhaile House 10/10 Excellent "Friendly " [](https://expedia.co.uk/Ballyvaughan-Hotels-Cappabhaile-House.h3081187.Hotel-Information) ![Blackberry Lodge Accommodation](//images.trvl-media.com/lodging/23000000/22270000/22268100/22268022/e9d2a125_y.jpg) ### Blackberry Lodge Accommodation 10/10 Excellent "Host was wonderful, and breakfast was great. Room was warm, cozy and a great place to relax after a full day." [](https://expedia.co.uk/Doolin-Hotels-Blackberry-Lodge-BB.h22268022.Hotel-Information) ## Hotels near other O'Brien's Castle attractions [](https://www.expedia.co.uk/Inisheer-Beach-Hotels.0-l6085949-0.Travel-Guide-Filter-Hotels) ### Inisheer Beach Why not spend a care-free afternoon at Inisheer Beach during your travels in Inisheer? Make time to visit the cathedral and monuments while you're in the area. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=6085949) [](https://www.expedia.co.uk/Teampall-Chaoimhain-Hotels.0-l553248621532988158-0.Travel-Guide-Filter-Hotels) ### Teampall Chaoimháin You can learn about the history of Inisheer when you stop by Teampall Chaoimháin. Amble around this relaxing area's seaside or seek out the golf courses. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=553248621532988158) [](https://www.expedia.co.uk/Cill-Ghobnait-Hotels.0-l553248621532988159-0.Travel-Guide-Filter-Hotels) ### Cill Ghobnait You can learn about the history of Ballyhees with a trip to Cill Ghobnait. Stroll along the seaside in this quaint area or seek out the golf courses. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=553248621532988159) [](https://www.expedia.co.uk/Aras-Eanna-Hotels.0-l553248621532988156-0.Travel-Guide-Filter-Hotels) ### Áras Éanna You can spend an afternoon browsing the exhibits at Áras Éanna during your trip to Inisheer. Amble around the area's seaside or seek out its golf courses. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=553248621532988156) [](https://www.expedia.co.uk/Teach-Synge-Hotels.0-l6085947-0.Travel-Guide-Filter-Hotels) ### Teach Synge You can spend time exploring the galleries in Teach Synge during your trip to Inis Meain. Amble around this quaint area's seaside or experience its live music. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=6085947) [](https://www.expedia.co.uk/Dun-Conchuir-Hotels.0-l6085945-0.Travel-Guide-Filter-Hotels) ### Dun Conchuir You can find out about the history of Inishmaan with a trip to Dun Conchuir. Stroll along this quaint area's seaside or simply enjoy its bars. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=6085945) [](https://www.expedia.co.uk/Synges-Chair-Hotels.0-l553248621532988154-0.Travel-Guide-Filter-Hotels) ### Synge's Chair You can learn about the history of Inishmaan with a stop at Synge's Chair. Amble around this quaint area's seaside or experience its live music. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=553248621532988154) [](https://www.expedia.co.uk/Burren-Stained-Glass-Art-Hotels.0-l553248621532489302-0.Travel-Guide-Filter-Hotels) ### Burren Stained Glass Art Enjoy an outing to Burren Stained Glass Art during your stay in Doolin. While you're here, you can savour the lively bars. [See properties](https://www.expedia.co.uk/Hotel-Search?rfrrid=TG.LP..PointOfInterests®ionId=553248621532489302) ## Frequently asked questions ### What's the area like around O'Brien's Castle? > O'Brien's Castle is located in an area of Inisheer that travellers like for its island views and seaside. If you're looking for a convenient place to stay, you could search for properties close to public transport so it's easy to get around. ### What's the best place to stay near O'Brien's Castle? > [Doolin Inn](https://www.expedia.co.uk/Doolin-Hotels-Doolin-INN.h22633075.Hotel-Information) is one of the top choices for your stay based on our traveller data, and this inn offers free breakfast and free parking. You'll find it 6.6 mi (10.6 km) from O'Brien's Castle. Other good options in the area include [Hotel Doolin](https://www.expedia.co.uk/Doolin-Hotels-Hotel-Doolin.h5950551.Hotel-Information) and [Luxury Lodges in Doolin Village](https://www.expedia.co.uk/Doolin-Hotels-Luxury-Lodges-In-Doolin-Village.h92137772.Hotel-Information). ### If I need to cancel the hotel reservation for my stay near O'Brien's Castle, will I receive a refund? > Yes! The majority of room reservations are refundable provided that you cancel before the hotel's cancellation deadline, which in most cases is within 24 or 48 hours of your check-in date. If you booked a non-refundable reservation, you might still have the option to cancel and be given a refund within a 24-hour period of your booking. Put your dates in and click on "Search", then use the filter option "fully refundable" to get the best options available near O'Brien's Castle.