Michel is great and answered quickly all my questions and sent detailed instructions about how to find the apartment.
His place is in a good location, easy to find, near restaurants, grocery store, Taksim Square and with easy access to bus and metro. I also felt safe in the neighborhood and the apartment is exactly as it is described and in the photos.
If you are visiting the city during summer just be aware there is no air conditioner. But there are 2 fans, one in the living room and another in the bedroom.