We stayed in the house for a week and had a great time. It matches the Airbnb description very well and is in a very interesting area of the city. The top floor terrace is excellent but try not to leave anything in the kitchen because it's 42 steps down and then back up!!
Transport around is very easy by ferry, bus and tram.
If you like coffee and cake you can't go wrong; there are many excellent small cafes on Vodina and Yildrim Caddesi. Velvet Cafe was especially good.
The only downside to the stay was noise at night; especially a group of dogs that barked frequently throughout the night and made sleep difficult.