Staying in Barbaros's place is a 5 star experience!
You will have your host always ready to help and assist, the place is bigger than seems in the pictures, with A/C in each bedroom, everything is brand new and comfortable!
We spent 3 nights 5 people, being there for a wedding and nothing could be better. Barbaros welcomed us leaving the fridge full with water (still and sparkling!), coffees (Turkish and American) and even took care of explaining the taxi driver where to drive us when arrived at the airport.
The place is very central, close to Blue Mosque, Hagia Sofia, Grand Bazaar and main historical Istanbul's places.
A must is to have at least a dinner in his restaurant, 5 minutes walking, and to discover he's a professional in tourism sector since decades.
Another thing not to miss is having a chat with him.
Absolutely recommended!