My husband and I came back from Istanbul yesterday and we were hosted by Barbaros. He is such an amazing host and he gave us a lot of helpful insights. The apartment is as seen on photos. It is literally no less than than any 5 star hotel apartment. He provided everything we needed: towels, water and even Turkish coffee.
We really likes the neighborhood. It is very lively, but if you are bothered by noise at night, then this might be something you should consider. You have to go up a hill to reach directly the grand bazar station. The location is very central, in the heart of the historical Istanbul.
I would totally recommend this accommodation and if we decided to come back we will definitely be looking for the Pashas Inn!