I'm happy that I've chosen this flat for my short Istanbul trip.
It's beautiful, clean, fully equipped and has a good location. Hatice provided me a lot of information about the area and was very nice to talk with. We didn't meet though, there is self check-in which I find perfect).
According to my observations this apartment will suit the best for tall people (I'm 170cm and it was fine). I don't recommend coming here with big baggage because of historical spiral narrow stairs. And the last thing - it's not very quiet place unless you close the windows. For me it wasn't the issue because my visit was in winter, but maybe in summer it will be different. The apartment has heating in every room as well.