The apartment was very nice, clean and in an excellent location. We could reach most sights of Istanbul in a rather short time period and there were lots of great cafés and restaurants nearby. Since it is situated towards a backyard, it was also calm during nights. Just the wifi-connection was very unreliable during our one-week stay.
Also, Firat was a great and helpful host. We would recommend this place for a trip to Istanbul which is an amazing city to explore!