It is hard to decide what we've liked the most. The host is really helpful, the room is really sweet, the location is close to most of sightseeing.
The room is compact, but you can find anything you need. Table, kitchen, kitchen stuff and everything your need for long term staying. Unfortunately we had only one night in Istanbul, but we've been charmed with the place.
Thank you very much, Yusuf, you made our impressions about Istanbul even better!