I was at many Airbnb houses before, but I should say Derya's place is something special.
Everything is nearby, the whole flat is private. The host's communication can be no better IMO. Not a single problem with Wifi, good for remote workers. The location can be bit noisy some times, but that is what you get in the most active and historical part of Istanbul.
Overall, it is a good value for money, and I wish to revisit Derya's place again.