Staying at Sefa's flat was a total pleasure.
Communication was fast and easy through airbnb - it translates the messages automatically.
The place has everything you need for your stay - short or long. If you need anything additional, like towels or bedding, it can be provided. Rooms are spacy, internet is fast, you can watch netflix.
The flat is 1 minute away from restaurants, shops and transport links. Memorial hospital is 5-10 minutes walking distance away.
We would definitely stay at the same flat when we come back to istanbul.
We cannot recommend it enough.