AirBnb showed that the apartment is in Karakoy, but in the real this place is enough far to it. In Fener.
It's very ambience location. Enough many restaurants. But here's no infrastructure. No money exchange, no copy centre.
The apartment is very cool and unusual. We had some problems with hot water, nightly noise, shower. Teammate of Ozlem fixed it very quickly. But it and unexpected location are reasons why I can estimate this experience only on 4 stars.