My wife and I had an amazing stay at Erol and Emre’s place. Both Erol and Emre are outstanding hosts. They were there all the time willing to promptly help us during our stay: quick response to our queries and needs, good advices in terms of touristic places to go and best ways to get to them, 100% available to help us anytime.
Regarding the flat, it is exactly how it is described here on AirBnB: cozy flat, very clean, metro station nearby, walking distance from many restaurantes, bus stops, stores and touristic places, quiet and safe neighborhood...
I will definitely deeply recommend the flat to all my mates going to Istanbul and hope I can stay there again in the future!