This was the best airbnb experience I had so far.
First of all because of the great host: Hatice. She's very friendly, helpfull and professional, and runs a nice and small café just around the corner. (You should start your day having breakfast at least once!)
Second: the apartment. It was exactly as we hoped it would be: clean, near all of istanbul's highlights but yet quit at night, and comfortably equipped with all the stuff you need during your stay. The apartment comes with a nice Golden Horn view, and is whitin easy reach of public transportation.
We considered it our home for the four days we were staying and if I return to Istanbul I'm sure to go there again.