The view of the Bosporus is wonderful. The nearby area has lots of local restaurants, cafes and shopping. You need a car or the walk back is up a steep slope.
We stayed for 1 month. The house needs repairs. The jacuzzi was not working and was only repaired after 10days and we had to handle the repairmen. The internet connection was bad and was totally down the last 7 days of our stay.
Apart from the view, I think it is overpriced.