The staff was extremely helpful. In fact, never in my life did I deal with hotel staff that is so helpful and friendly. Everybody went out of their way to lend a helping hand when needed Arif, Yunus, Yusuf, Samet (among others whose names I did not pick up) were all amazing and willing to do anything to make my stay enjoyable. Arif even took me to buy a tramway card and gave great instructions about which directions to take in order to walk less since I had a problem with my knees. Yunus took the time to show me where to go and made phone calls to book my excursions for me. Samet called my airlines for me, and the other front desk staff were always welcoming, offering tea and water and a great chat whenever I was tired after my long trips. Room service staff were also thorough and always checked with me if there is anything needed, and the waiter at the restaurant always made sure I was satisfied with my breakfast. The interior of the hotel is very beautiful and the views are mesmerizing, the location is perfect for commute, shopping and sightseeing. I will definitely stay there again when I visit Istanbul next. Thank you all at Daru Sultan for making my trip memorable.