That is actually a very nice place to stay. The appartments is very clean and the view is just amazing!
Bülent is a nice host, very helpful. You can ask him whatever you want he will do his best to help you, how to get a Turkish SIM card, where can I get change, he even provides me an IstanbulKart for the public transportations.
The only bad thing about my stay is that Bülent had only one key for both of us... (it is not usually like this)