It's really like a hotel - but for a much more reasonable price. The appartment has been cleaned every day, all towels replaced, rubbish taken away - even the dishes were washed!
The premises itself is also very nice - with all the necessary equipment and a bit of style. The hosts (they own the entire house) are extremely friendly and helpful.
The only minus is the somewhat spooky neighbourhood - but still a walking distance from Sultanahmet square and 5 min from Beyazit tram stop.

Will definitely recommend to everyone. My best experience with airbnb so far!