Unfortunately I never got to meet Firat but his friend met me for check-in and gave me some tips on the local area. Friat was available via messages and was quick to respond.
The apartment is very spacious and has everything you need for a comfortable stay in Kadiköy. It is easy to find and is on a quiet residential street but only 10 mins walk to the area with bars and restaurants!
I would stay there again without a doubt.