We had a great time staying at Tevfik's place. Everything was exactly as described if not often better. The location of the place puts it in close proximity to most attraction points such as Grand Bazaar, Sultanahmet Mosque, Aya Sofia, etc. The place was very clean and Tevfik was gracious to offer cleaning services on a daily basis.
Communicating with Tevfik was smooth, efficient, and timely.
We couldn't ask for a better place to stay in Istanbul and would certainly come back!
Mustafa