The place is very clean and comfortable. Looks a bit better in pictures, but all-in-all lives up to the expectation. It's located in an alley that looks a bit sketchy but ended up being completely fine. The apartment itself from the bedroom side looks into a small space between two buildings and onto a ruined building right next to it. Not much of a view and it really only serves for fresh air in the bedroom.
On the other side of the apartment it looks over that aforementioned alley directly into the building on the other side of it. So not much of a view on either side, and also not much light, the place is pretty dark without lights on.
There are currently construction works being done in a very close proximity so it gets loud early in the morning. I personally sleep with ear plugs so I didn't experience issues with that, but keep it in mind. Our visit was end of May 2022, so if you're reading this more than few months from me writing the post, you should probably disregard that remark.
Gülşen was very responsive to all our messages and very helpful, although we didn't actually meet him in person. We were greeted by a person who didn't speak english and then there was another person on a mobile phone call that was actually speaking with us. Not much of an issue and our check-in went great and they even prepared a bottle of water for us on arrival which was great because we were thirsty and apparently tap water in Istanbul is not really drinkable.
We had a great time and place is actually a good value all things considered.