The apartment was clean, comfortable and a good size for two to three guests. It is conveniently located as well -- within walking distances to many of Istanbul's attractions and shops. Kenan also kindly arranged a private airport transfer for our late night flight.
Unfortunately, the air conditioning broke down during our stay there which negatively impacted our experience. There was nothing Kenan could do for us because (a) they could only service the AC after our stay, and (b) the only fan they had was spoilt. We had to sleep with the windows open and since there are no insect screens installed, bugs came into the apartment (a cat tried to enter as well!). In addition, the windows could not be opened by a big angle due to the curtains, which limited the airflow into the apartment. Thankfully, our stay was during the autumn which is neither too hot nor too cold, I can't imagine how this would be during summer or winter. Nevertheless, the malfunctioning AC was a great inconvenience during our stay here, and there was sadly no compensation offered by the host nor anything done during our stay. Stay here during winter or summer at your own risk!