Eyup's place is in a fantastic location, with easy access to all the main sites in Istanbul. The apartment was exactly as described and shown in the pictures, and was big enough to accommodate six of us with plenty of space.
As for Eyup, he arranged a taxi service to and from the accommodation (both of which were at awkward times) and ensured that he was always available to answer questions.
Wholeheartedly recommend Eyup's place.