The location is very good. Not too far from main tourism location (Sultanahmet area). Pazartekke Tram Station is right in front of this hotel, so if you prefer public transport within Istanbul or to go to airport / bus station, this might make your trip much easier. Room is spacious, completed with kettle and daily complimentary bottled water, tea bags and coffee, and also iron and ironing board. My bathroom has a bathtub (although I only used it for shower). Breakfast is superb.
The only thing I might complain is that the breakfast hall should be bigger for 5 star hotel, as (in my observation) it felt so crowded and cramped when almost all guests come for breakfast in the main breakfast time (between 8 and 9 am).