Totally recommend this place!
The location is very good in a clam neighborhood, it's close to Beşiktaş life, on the same time away from its noise.
The room is clean and cozy with a comfy big bed! Also the whole place was really nice, calm and well equipped. It looks like photos (actually much better than the photos).
Beside all of this, it was nice to deal with such a kind, hospitable and very helpful host, Hande. She helped me on everything I need during my stay and was always doing her best to keep the guest happy and satisfied.
If I'm in Istanbul again, of course I'll visit this place again!