i rated this 4 stars, basically for the great location this hotel has. If you ever visting istanbul on a short vacation, it is more than great.
Many of the attractions (Blue mosque, topkapi palace, undeground cistene...) are a walking distance from you, and the Tram line is around 100 meters from the hotel.
The hotel itself offers you just the basic necessities (Bed and Breakfast, Bathroom), although the room is not really filled with amenities but the WI-FI connection is very much appreciated.
If your staying for a couple of days in Istanbul i highly recommend the Alzer
- Alzer Hotel Istanbul
