The four of us stayed at Cihan's place for a month. It was one of the best experiences on AirBnb.
The apartment was squeaky clean when we arrived and it had everything you would need for a long stay, and more! The place is well-lit, spacious, and the location is perfect - not far from the city center (there's a metro line to Taksim Square on a 10 min walk from the house and the square is only a couple of stops away), but it's far enough from the crowd and at the same time. The Internet speed is good, and the connection is reliable which was quite important to us, since we all work online.
The aparment is a true gem and Cihan is a wonderful, attentive host. I would recommend his place over and over again.
Best regards.