Stefanos is one of the best hosts we've ever met. He's very responsive and always willing to help. For example, we needed a second table for work and got it within a day. He also helped us to order a taxi to the airport very early in the morning.
The apartments are really comfortable and there's everything you may need for living, starting with household appliances and finishing with towels, bed linens and cookware. It's very light and clean, we really enjoyed spending time there.
Sultangazi is quite a remote area, but there are many transport to reach the city center or big shopping malls like Venezia Mega Outlet or Istanbul Forum. Small grocery stores are in walking distance.