Gafur is a nice, generous man. Check in was without issues. The flat was nice, the furniture was a bit vintage, but everything was clean and useful. It has a gas oven, refrigerator, dishwasher and a washing machine.
The quarter was in Balat which I knew from 10 years ago before its gentrification. It is a colorful, beautiful place where old and new are melted together.
There are a lot of nice cafés, restaurants, it is one of the most central places in Istanbul. Bus is near the apartment, tram station also. There is a ferry station near the apartment, too. A 10 minutes ride takes you to Eminönü.
I can recommend Gafur as a host to everyone wanting to visit Istanbul.