I spent exactly two months at Hakan's place and I have to say that I never regretted my choice. The location is perfect, exactly between the beautiful upper-class neighbourhood of Nişantaşı and the student crowded lively streets of Beşiktaş center. It is also 5 minutes away both from Maçka Park and from the Bophorus. Needless to say there is something for every taste here. The transportation to the rest of the city is furthermore very easy and you will not have difficulties to find anything you need for your daily live in a 200 meters radius.
Hakan's flat is clean and luminous, topped by his great hospitality. Hakan is one of the kindest and most helpful person I have ever met. He is also a very educated and interesting person, so do not hesitate to ask him questions about Istanbul and the neighbourhood!
Hakan, it was a pleasure staying with you, görüşmek üzere :)