This is a very cozy and clean hotel with a great location - right behind Hagia Sofia in the Sultanahmet square. The rooms are very clean and well arranged. They are a little tiny - a lot like the family run B&Bs you find in Greece. They have an excellent rooftop dining which has a fantastic view of the Bosphorus and Hagia Sophia - so each morning you get to have a breakfast with a V-I-E-W which is itself worth a lot, especially for tourists. The staff is young and very friendly, always on the job and ready to take requests and provide city information - they obviously know Istanbul in and out.
Literally a 2 minute walk from Hagia Sophia, Blue Mosque, Topokapi palace and the Archelogical museum. It is also 2 minutes walking to the tram line - which connects you to the Bosphorus port , the Bus station, Ataturk Airport and Beyoglu. It is 5 minutes walk from the charming bazaars of old Istanbul - and is surrounded by restaurants, people, carpet shops and tourists.