We lived at Yilmaz's apartment for almost a week and the experience was good. First of all, I'd like to mention the location, all the main touristic points are near. Also, there's a bus stop in just 2 mins. It's helpful if you want to get to the ferry station and don't want to go on foot there although we did (approximately 25 min). There's a good cafe on the first floor, we ate there twice, the food was great and the prices are reasonable for the tourist area.
The second thing I liked the most about the apartment is the view. It's amazing. Seagulls, the sea, lights, ships - you can watch all of this while having breakfast or drinking a glass of wine.
We were in Istanbul in winter so it was a bit cold in the apartment. There's a heater and air conditioner with warming so it wasn't a problem.
Yilmaz was an attentive host, he helped to organise a transfer from the airport and made some nice gifts for us.
The flat was clean, there's no problem with hot water or internet connection. So, I would recommend the apartment.