I've stayed in 2 different rooms and every one of them was really sunny and the bed comfortable.
Can is a really polite host who was 24/7 available for all kind of questions and help even when he was busy and not in the house. His roommates are also really polite and helpful.
The apartment is located near the Taksim Square which you can't reach in about 7-10 min footwalk. The neighborhood is clean and quiet at night. There are many shops close by like small restaurants, barber shops, grocery and stuff.
I'd stay here again if my destination is Istanbul