My girlfriend and I had a very pleasant stay and could just say that the hosts are extremely responsive and welcoming. We also received some nice suggestions for places around the neighborhood and Istanbul in general and they were all great!
The place itself looked exactly like in the pictures and covered all basic needs. It is compact but comfortable to use and a quite good deal overall for an adventurous couple or a traveler. As some other reviews mention, the big mosque nearby can actually wake you up in the morning but it wasn't a big deal. We arrived on a Wednesday and the whole street and area were turned into a huge street market for the day, that was such a fun cultural experience. So is Fatih as a district I guess, more towards the conservative side, it has its own slower tempo, although being close to many important landmarks. We felt really safe and the people were lovely everywhere.
The area around the Golden Horn is amazing and only some 10-15 minutes away, recommended.