The best part of this place is Ali's hospitality. He is very quick to respond, very quick to take care of any problems that come up and does it all with a great attitude.
The apt itself is very well located if you plan to spend most of your time in the Sultanahmet area. It's just at the edge of that area and less than 7 mins walk from everywhere.
It is a rather tiny apt with a kitchen that is not really sufficient for cooking. You can easily heat things etc but if you expect to cook you would find that difficult. The two bedrooms are a split from a single larger bedroom. They don't offer total privacy from each other but since I was with family that was not an issue. Plus the photos had accurately represented all of this so I was not surprised
On the whole, the place gets a five star because of the attentive hospitality and the accurate descriptions.