This is a beautiful apartment, exactly as advertised. It was spotless, quiet, light-filled, and in a terrific location for exploring the city. The terrace has a spectacular view, and has a small table where I liked to eat my breakfast. There are all sorts of little grocery stores (the kitchen is well equipped if you like to cook) and places to eat nearby, and the metro and buses and tram are easily accessible. Orkun is really responsive and helpful--for example setting me up with a taxi to the airport. You will love this place!
One unusual amenity: the nearby stadium where there is track open to the public 7-10 a.m. I was training for a marathon during my visit and Istanbul is NOT an easy running town. This track saved me!