Staying at Deniz's house was the best meeting-new-people experience me and my wife have ever had.
Deniz is a very polite and hospitable guy. His apartment is in great condition: clean, bright, and with its own ambient. I like when the house tells you about the host, and it's one of this cases.
Beside that Deniz has a nice and very gentle cat called Pamuk. He likes to eat and if you give him food he'll consider you his friend pretty soon.
If I had to pick a host for my next trip to Istanbul I wouldn't hesitate to repeat this experience.