Dündar's apartment was great! Very spacious, clean, safe, and well equipped. It's also in a great location. The Havatas shuttle buses from both airports stop in Taksim Square, which is walkable from the apartment, or only a 5-6 Turkish Lira taxi ride.

My friend and I had the room at the back and had lots of space for us to spread out. The room's window looks out onto a narrow street with an auto shop/garage on the street level and apartments above. The garage seemed to be open 24 hours and in the evening the apartment tenants like to look out the window at the passing action, so be weary of this when changing/sleeping and close the curtains.

We arrived on a late flight and Dündar stayed up to let us in, which was really great. He also gave us useful advice about the true cost of a cab from the bus in Taksim Square to his place, and how the taxi drivers generally try to charge extra. If you're taking a cab, make sure to ask them to use the meter.