I stayed at Kenan's home for about 1 week. Its a great apartment, well located near the metro and also the train station. The neighborhood is quiet except for the ducks (I think they were ducks) that I could hear in the mornings. There is also a great outdoor market on Thursdays. Fruits, vegetables, cloths, toys. Just remember, if you have a car you'll have to find someplace else to park on Wednesday night and Thursday. Actually, you don't have to remember, Kenan will send a message to remind you.
For me the most important thing is that the apartment is ultra clean. No dust or dirt anywhere, the kitchen was spotless, the floors seemed polished.
The apartment was huge. More than what I needed for 1 person yet still warm and cozy. I spent my time in the bedroom, kitchen, and the table in the hallway made an excellent desk (I work remotely). I didn't need the big living room but if I was there with my family, it would be a great place for family dinners and relaxing.
The wifi worked perfectly, the speed fast enough for meetings.
Overall, next time I am in Istanbul, I will be contacting Kenan.