Not sure why you would pay the main Sultan rates. The Comfort rooms are literally 20 paces away from the main hotel where all the facilities are and are included for a fraction of the price for a room. The room was quite small but in a city as fantastic as Istanbul why would you stay in your room all holiday. Breakfast is varied and good quality. The spa pool is tranquil and beautiful. Only comment was that in the winter there is no air conditioning only heating and the room got pretty warm but the windows opened so it was completely fine.