A very nice and clean appartment, a few minutes walk away from the Bosphorus. Everything is just like the pictures, and it has all you need for a few days vacation in Istanbul. It is not far from Taksim square, though the traffic during day time can be a hassle.
Gonca was very friendly and on the first day took us to a shop near by where we could buy groceries etc. The area is nice, and don't miss the park near by - it's a beauty. Be ready for an uphill walk on the way home though - not long, but a bit steep.
In short, highly recommended.