If you have a chance to stay at Erhan's house, do not miss your luck. I traveled Turkey for a month. I visited several cities and stayed 5 houses. Erhan's house was the best of best. It is really clean and he is very warm and thoughtful host.
Whenever I think about Istanbul, I will miss the great time at Erhan's house. If you are a person who think travel is to live at the strange city as one of neighbor, Erhan's house is the perfect stay. Also Erhan will be your first neighborhood.