Small but comfortable place in an excellent location for both restaurants and tourist attractions. Very convenient for seeing the Hagia Sophia. There is a decent little view of the water and the city on the other side of it from the balcony, very pleasant.
The Wifi was fast and we'll within my requirements for work. If you are planning to work from the apartment, you should know that it is quite near a mosque, and every few hours they play Islamic chanting. I would not mind this except for the fact that I was frequently on work calls and it was a bit distracting.
Also, the place is up a few flights of stairs, so take note if you are disabled or are carrying heavy luggage.
Otherwise, I was very satisfied with my stay here and would come again. Taner was a very helpful and communicative host.