I've been into Istanbul 2 times before, but this was the best one. And it was because of the nice people I met in the place. Eren, is a great person, he does his best to help you find things around. I had the best Istanbul experience with him.
The location also was great, you walk into an alley full of bars and restaurant and the apartment is just in the middle of that.
I'm a coffee enthusiast, the great coffee houses of Istanbul are just 10 minutes of walk away.