The flat is very nice and clean, and there is anything in it you need for cooking etc. It is located in a quiet and safe area, right next to the Bosphorus, 10 mins walking from the Besiktas sea terminal. It is on the border of the magnificent Yildiz Park, to which there is a small entrance on the opposite side of the road, ten meters down the street from the flat ! Nice quiet place for runners and families with children (ourdoor games, fitness equipments, ...). Besiktas is a lovely and lively neighbourhood. I would definitely recommend it to people who want to visit Istanbul and see various facets of it while not staying in touristic areas.
Gonca was a very nice and helpful host who made everything to make our stay easy.