Loved my 5 days in this apartment!
Its clean, modern, has everything you need -- AC and Wifi both worked well -- and as a bonus, you wake up with an awesome view of Istanbul harbor, all the ships and ferries criss-crossing the water. What a sight!
The neighborhood - Cihangir -- is terrific, full of cafes, restaurants and the hip crowd. A large Carrefour supermarket is a few blocks away.
One note: like much of Istanbul, Cihangir is on a hill and walking from the apartment to the commercial area is a short but steep uphill. A good workout, but maybe a challenge for elderly/people not in shape.