I've not much to say, except that apartment is far better than it looks on pictures. Perfect condition, location, and host. You may just sit near the huge window and overlook Bosporus and European part of Istanbul for many hours, during day time or even better at night. Look of European part is better than look of Asian part, if you consider Bosporus looking apartment. Abdu provided great support of our stay. The location is great, you can take boat trips to European part or old-city right from the pier next to the apartment, it just takes 10-15 minutes of great time looking at Istanbul from the sea. Using Istanbul card, as part of public transport system. Good shop with groceries is very close, Mado cafe with great ice-cream is just 2 minutes by walk, with terrace overlooking the sea.
Will definitely come back to Abdu. Also highly recommended for families - there is a good walking path alongside the sea with kids playgrounds.