We absolutely loved our stay in Istanbul and Fatih's apartment made it extra comfortable. Our flight arrived very early in the morning and Fatih arranged a private car to pick us up (which we highly recommend if you don't mind spending money for the convenience) Fatih met us at 3am to pass over the keys and give us some basic information about the area, which we greatly appreciated.
In addition despite the current political trouble on Turkey/ Istanbul we didn't feel unsafe whilst we were there. Although we left the day after they began, locals courteously warned us not to visit certain areas.
We highly recommend Fatih's apartment and the fascinating city of Istanbul to all!