I, personally, believe that Yakup is a good host I experienced.
He tried to listen to my voice and also suggested me solutions for the problems I got.
For accomodation, his house is located at common residential place.
But if you know how to take public transport (bus, metro and commuter rail) with Istanbul card, you can reach anywhere in the city where you would like to visit.
Finally, I appreciate him for receiving me as a guest, I want to see him if I visit Istanbul again.