The flat is in a wonderful location (historic building) in close proximity to a few cafes and major walking attractions. It was spacious, clean and a shower in each room was a plus. We had 5 adults and 2 children with plenty of room to not feel crowded. Erdem was very responsive and friendly. He arranged transfers to and from the airport for us.
Two items to note:
1. We had to walk up 70+ stairs to get to the apartment (great exercise) - no lift.
2. Bars/cafes downstairs are open till 2-3am and can be very noisy if you are trying to sleep.