Eren is a great host! He helped us a lot to spend time in Istanbul more comfortably. The flat is very nice and cozy. Location is good as well, of course, you need a few days to start to navigate better in Istanbul's streets but then you will understand how to get to main streets faster from your house. Also, there is an excellent restaurant on the same street, near the apartments, which is called Cuma. Moreover, Eren has provided us a mobile wi-fi router and it was super useful. Finally, suggested transfer from the airport, is a really great opportunity, I guess it is the cheapest and easiest way to go to/from the airport.