Title: The 10 Best 5 Star Hotels in Grassy Key - 2025 Updated Prices | Expedia.co.uk [Grassy Key Travel Guide](https://expedia.co.uk/Grassy-Key.dx3000451823)[Hotels in Grassy Key](https://expedia.co.uk/Grassy-Key-Hotels.d3000451823.Travel-Guide-Hotels)[Holiday Rentals in Grassy Key](https://expedia.co.uk/Grassy-Key-Holiday-Rentals.d3000451823.Travel-Guide-HolidayRentals)[Flights to Grassy Key](https://expedia.co.uk/Cheap-Flights-To-Grassy-Key.d3000451823.Travel-Guide-Flights)[Things to do in Grassy Key](https://expedia.co.uk/Things-To-Do-In-Grassy-Key.d3000451823.Travel-Guide-Activities)[Grassy Key Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-Grassy-Key.d3000451823.Car-Hire-Guide)[Grassy Key Holidays](https://expedia.co.uk/Grassy-Key.d3000451823.Holidays-City-Breaks) ![Dolphin Research Center which includes a statue or sculpture and signage](https://a.travel-assets.com/findyours-php/viewfinder/images/res70/64000/64019-Dolphin-Research-Center.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Compare and book 5 Star hotels in Grassy Key, Marathon ![price find illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__price_find.svg) ### Change your mind Book hotels with free cancellation ![deals illustration](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) ![bed illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__bed.svg) ### Be picky Search almost a million properties worldwide ## Check availability on Grassy Key 5 Star Hotels Tonight [19 Sept - 20 Sept](https://www.expedia.co.uk/Hotel-Search?regionId=3000451823&startDate=2025-09-19&endDate=2025-09-20&adults=2&star=50&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) Tomorrow [20 Sept - 21 Sept](https://www.expedia.co.uk/Hotel-Search?regionId=3000451823&startDate=2025-09-20&endDate=2025-09-21&adults=2&star=50&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) This weekend [19 Sept - 21 Sept](https://www.expedia.co.uk/Hotel-Search?regionId=3000451823&startDate=2025-09-19&endDate=2025-09-21&adults=2&star=50&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) Next weekend [26 Sept - 28 Sept](https://www.expedia.co.uk/Hotel-Search?regionId=3000451823&startDate=2025-09-26&endDate=2025-09-28&adults=2&star=50&rfrr=TG.LP.CheckPrices.Hotel&openPlayBack=true) ## Top Grassy Key 5 Star Hotels ![Property grounds](https://images.trvl-media.com/lodging/25000000/24110000/24101800/24101706/1b2ea44f.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![View from room](https://images.trvl-media.com/lodging/25000000/24110000/24101800/24101706/e1765627.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Breakfast and dinner served](https://images.trvl-media.com/lodging/25000000/24110000/24101800/24101706/9f64224f.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ![Premium bedding, in-room safe, desk, laptop workspace](https://images.trvl-media.com/lodging/25000000/24110000/24101800/24101706/046d7acc.jpg?impolicy=fcrop&w=357&h=201&p=1&q=medium) ### Isla Bella Beach Resort & Spa Marathon 9.2/10 Wonderful (1057) "Sea view, amazing staff , beautiful rooms " £236 includes taxes & fees 28 Sept - 29 Sept [](https://www.expedia.co.uk/Marathon-Hotels-Isla-Bella-Beach-Resort-Spa.h24101706.Hotel-Information) ![](https://a.travel-assets.com/pricing-claim/sparkle_dark.svg) Save an average of 15% on thousands of hotels when you're signed in [Sign in](https://expedia.co.uk/user/signin?ckoflag=0&uurl=e3id%3Dredr%26rurl%3D%2F5Star-Grassy-Key-Hotels.s50-0-d3000451823.Travel-Guide-Filter-Hotels)[Sign up, it's free](https://expedia.co.uk/signup?enable_registration=true&+=&uurl=e3id%3Dredr%26rurl%3D%2F5Star-Grassy-Key-Hotels.s50-0-d3000451823.Travel-Guide-Filter-Hotels) ## Explore similar 4-star hotels Many 4-star hotels have the same amenities as 5-star hotels. See all 4-star hotels in Grassy Key. ![Hawks Cay Resort](https://images.trvl-media.com/lodging/1000000/10000/6100/6068/b1845555_y.jpg?impolicy=resizecrop&rw=402&ra=fit) ### Hawks Cay Resort 61 Hawks Cay Blvd, Marathon, FL £261 29 Sept - 30 Sept includes taxes & fees 8/10 Very Good! (1,004 reviews) [](https://expedia.co.uk/Marathon-Hotels-Hawks-Cay-Resort.h6068.Hotel-Information) ![Tranquility Bay Beachfront Hotel and Resort](https://images.trvl-media.com/lodging/1000000/120000/117100/117099/a50ca43c_y.jpg?impolicy=resizecrop&rw=402&ra=fit) ### Tranquility Bay Beachfront Hotel and Resort 2600 Overseas Hwy, Marathon, FL £245 14 Oct - 15 Oct includes taxes & fees 8.8/10 Excellent! (1,005 reviews) [](https://expedia.co.uk/Marathon-Hotels-Tranquility-Bay-Beachfront-Hotel-And-Resort.h117099.Hotel-Information) ![Faro Blanco Resort & Yacht Club Marathon, Curio by Hilton](https://images.trvl-media.com/lodging/2000000/1170000/1169600/1169583/e43f23ef_y.jpg?impolicy=resizecrop&rw=402&ra=fit) ### Faro Blanco Resort & Yacht Club Marathon, Curio by Hilton 1996 Overseas Highway, Marathon, FL £151 25 Sept - 26 Sept includes taxes & fees 8.8/10 Excellent! (1,282 reviews) [](https://expedia.co.uk/Marathon-Hotels-Faro-Blanco-Resort-Yacht-Club.h1169583.Hotel-Information) Still don't see what you're looking for? [See all properties in Grassy Key.](https://expedia.co.uk/Hotel-Search?rfrrid=TG.LP.Hotels.Hotel&startDate=20%2F09%2F2025&endDate=21%2F09%2F2025®ionId=3000451823&star=50) You can also use these popular filters to refine your search. [Pool](https://expedia.co.uk/Hotel-Search?rfrrid=TG.LP.Hotels.Hotel&startDate=20%2F09%2F2025&endDate=21%2F09%2F2025®ionId=3000451823&star=50&star=50&amenities=POOL)[Spa](https://expedia.co.uk/Hotel-Search?rfrrid=TG.LP.Hotels.Hotel&startDate=20%2F09%2F2025&endDate=21%2F09%2F2025®ionId=3000451823&star=50&star=50&amenities=SPA_ON_SITE)[Hot tub](https://expedia.co.uk/Hotel-Search?rfrrid=TG.LP.Hotels.Hotel&startDate=20%2F09%2F2025&endDate=21%2F09%2F2025®ionId=3000451823&star=50&star=50&amenities=HOT_TUB)[Breakfast included](https://expedia.co.uk/Hotel-Search?rfrrid=TG.LP.Hotels.Hotel&startDate=20%2F09%2F2025&endDate=21%2F09%2F2025®ionId=3000451823&star=50&star=50&amenities=FREE_BREAKFAST)[Waterpark](https://expedia.co.uk/Hotel-Search?rfrrid=TG.LP.Hotels.Hotel&startDate=20%2F09%2F2025&endDate=21%2F09%2F2025®ionId=3000451823&star=50&star=50&amenities=WATER_PARK) 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. ## Learn more about Grassy Key Discover the seaside area of Grassy Key—beaches, a marina and sights from Curry Hammock State Park to Keys Cable Park. [See all hotels in Grassy Key](https://www.expedia.co.uk/Hotel-Search?startDate=2025-10-03&endDate=2025-10-04&adults=2®ionId=3000451823) ![Dolphin Research Center which includes a statue or sculpture and signage](https://a.travel-assets.com/findyours-php/viewfinder/images/res70/64000/64019-Dolphin-Research-Center.jpg?impolicy=fcrop&w=900&h=506&p=1&q=high) ## Top Grassy Key Hotel Reviews ![Isla Bella Beach Resort & Spa](//images.trvl-media.com/lodging/25000000/24110000/24101800/24101706/1b2ea44f_y.jpg) ### Isla Bella Beach Resort & Spa 10/10 Excellent "Beautiful hotel with everything you need on the property. Also very well maintained, friendly and helpful staff. Food at the Mahina restaurant was delicious. Definitely want to come back!" [](https://expedia.co.uk/Marathon-Hotels-Isla-Bella-Beach-Resort-Spa.h24101706.Hotel-Information) ## Find out more about Grassy Key ## Frequently asked questions ### How much does it cost to stay in a 5-star hotel in Grassy Key? > You can find a range of pricing options for 5-star hotels in Grassy Key on Expedia. How much you'll pay will depend on your holiday dates, length of your trip and other factors. Compare all of the available properties for your chosen dates and make use of our pricing and other filters to lock in the perfect high-end stay. > > > > - Search for the lowest price per night from £151 ### What makes a hotel 5 stars in Grassy Key? > From gourmet restaurants and all-day gyms to pools and the finest bedding, the 5-star experience in Grassy Key is all about relaxation and luxury. But it takes more than just upscale conveniences to get a 5-star rating. Stays also have to provide extraordinary guest-centric services like in-room massages, on-site laundry and dry cleaning and a nightly turn-down service. ### Are there any 5-star all-inclusive resorts in Grassy Key? > Use Expedia's filter tool to find a high-end getaway in Grassy Key where everything you need is included. After your initial search, refine your results for properties that have 5 stars and are categorised as "All inclusive." The first thing to look forward to at these stays? 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[Flights from Orlando (MCO) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/mco/mth/orlando-to-marathon) - [Flights from Manchester (MHT) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/mht/mth/manchester-to-marathon) - [Flights from Miami (MIA) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/mia/mth/miami-to-marathon) - [Flights from Melbourne (MLB) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/mlb/mth/melbourne-to-marathon) - [Flights from Minneapolis (MSP) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/msp/mth/minneapolis-to-marathon) - [Flights from Orlando (ORL) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/orl/mth/orlando-to-marathon) - [Flights from Raleigh (RDU) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/rdu/mth/raleigh-to-marathon) - [Flights from Tampa (TPA) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/tpa/mth/tampa-to-marathon) - [Flights from Valencia (VLC) to Marathon (MTH)](https://www.expedia.co.uk/lp/flights/vlc/mth/valencia-to-marathon) - [Curry Hammock State Park](https://www.expedia.co.uk/Curry-Hammock-State-Park-Marathon.d6069251.Attraction) - [Duck Key Holidays](https://www.expedia.co.uk/Duck-Key.d184267.Holidays-City-Breaks) - [Visit Duck Key](https://www.expedia.co.uk/Duck-Key.dx184267) - [Visit Key Colony Beach](https://www.expedia.co.uk/Key-Colony-Beach.dx121486) - [Visit Little Venice](https://www.expedia.co.uk/Marathon-Little-Venice.dx553248635976468704) - [All inclusive Holiday Packages Duck Key](https://www.expedia.co.uk/lp/theme-holidays/all-inclusive-holidays/184267/Duck-Key) - [Golf Holiday Packages Duck Key](https://www.expedia.co.uk/lp/theme-holidays/golf-holidays/184267/Duck-Key) - [Mountain Holiday Packages Duck Key](https://www.expedia.co.uk/lp/theme-holidays/mountain-holidays/184267/Duck-Key) - [Ski Holiday Packages Duck Key](https://www.expedia.co.uk/lp/theme-holidays/ski-holidays/184267/Duck-Key) - [Car hire near Duck Key](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Duck-Key.d184267.Car-Hire-Guide) - [Rental cars Florida Keys Marathon airport](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Florida-Keys-Marathon.d6030314.Car-Hire-Guide) - [Dollar Rent A Car Rental Cars in Duck Key](https://www.expedia.co.uk/Dollar-Rent-A-Car-Car-Rentals-In-Duck-Key.d184267-c43.Car-Rental-Guide-Suppliers) - [Pickup Car Hire in Duck Key](https://www.expedia.co.uk/Pickup-Car-Rentals-In-Duck-Key.d184267-tPickup.Car-Rental-Guide-Class) - [Thrifty Car Rental Rental Cars in Duck Key](https://www.expedia.co.uk/Thrifty-Car-Rental-Car-Rentals-In-Duck-Key.d184267-c45.Car-Rental-Guide-Suppliers) - [People Carrier Car Hire in Duck Key](https://www.expedia.co.uk/Van-Car-Rentals-In-Duck-Key.d184267-tVan.Car-Rental-Guide-Class) - [Duck Key Holiday Rentals](https://www.expedia.co.uk/Duck-Key-Holiday-Rentals.d184267.Travel-Guide-HolidayRentals) - [Key Colony Beach Holiday Rentals](https://www.expedia.co.uk/Key-Colony-Beach-Holiday-Rentals.d121486.Travel-Guide-HolidayRentals) - [Things to do in Duck Key](https://www.expedia.co.uk/Things-To-Do-In-Duck-Key.d184267.Travel-Guide-Activities) - 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