We really enjoyed staying at Mehmet's apartment. We spent a month here and it was almost as comfortable as staying at home.
The flat is situated really close to the city center, it is a pleasure to go out in the evening for a stroll by Cumhuriyet Caddesi. There are several supermarkets right beneath the apartment (Carrefour and Migros) which is also very convenient.
There is also a wonderful Doorman who was always ready to help (and indeed helped us sometimes, e.g. when the fan got broken we contacted Mehmet and in several hours the new fan was brought by the guy). So, special thanks to this kind Sir!
I totally recommend staying at Mehmets apartment.