We did a last minute booking and Musacan was extremely available and nice with us. Him and his brother treated us extremely good and helped us with different issues during our stay.
The best part of the house are the living room with air-conditioning, a beautiful terrace with amazing view and a beamer.
The house is located very close to Beyoğlu but bit difficult to get taxis to find the house. Anyways you are 20 min walking away from the center.
If you are looking for an affordable place with beautiful view to stay few days in Istanbul, it's perfect!