My stay at Ali's Dama House was a great experience! The flat is super central, rooms are light and clean. Ali is a perfect host and very helpful for a very wide range of issues (recommendations about the area, organizing trip to the airport, providing new kitchen supplies if needed etc)! He lives not in the same flat but in the same building so it's very easy to get into contact with him if help is needed (ususally one can just send him a message on WhatsApp and he replies within few minutes)
I'm definitely trying to get into the same flat once I come back to Istanbul and I can most definitely recommend it!