Isik is a great host and was easy to communicate with him. His apartment is less than a minute walk to Taksim square and to public transportation. You can get to anywhere in the city easily and quickly. The place is cozy and has everything you may need, including a gas stove although you may not need it since Istanbul is g rest place to eat out.
I would definitely consider staying at Isik's again and recommend it to anyone traveling to this amazing city.