I spent a month in this flat. Beautiful apartment. Spacious, super fast wifi, comfortable working space, great location in a local neighborhood. Lots of options for food, groceries, shopping nearby.
The bus into the centre is 2 minutes away and the tram/subway is about a 15 minute walk. You can get anywhere you want to be in the city in an hour or less.
Kemal himself is really friendly. Very responsive and helpful during my entire stay.
No complaints and I would definitely recommend this place. Perfect for one or two people looking for a laid back Istanbul experience.