Great stay at Mehmet's flat ! We were five friends, split into one double bedroom and the living room. We had enough space although we were not too fussy as we spent a lot of time outside in the city. The flat was very clean, we had sheets and towels, kitchen equipment... We best enjoyed the roof top with a wonderful view over Istanbul. It didn't look like the pictures (not as clean, only a sofa and a table) but we made something out of it !
To finish, we had an easy communication with Mehmet, it is always nice to have someone that helpful to talk to !