We stayed in Conkun's flat for over two weeks. It is a really lovely place, very clean and new, well equipped and with a wonderful view on the Bosphorus, just like on the picture. We stayed with our five year old son who was sleeping on a futon, in a separate room, very comfortably.
The neighborhood is very well located, close to Ortakoy ( two bus stops) with very good local restaurants and fantastic vibe. Rayka, who is Coskun friend helped a lot.
The only downside was slow internet; the owner does not have a router and we were using a wifi hotspot instead that owner provided.