We stayed at Ahmet's place for 3 days. The place was smaller than I expected but the rest was much better than I thought.
First of all - location. It situated close to tram station, metro station and Istiklyal street. First night we came was late and it was raining but walking around these beautiful streets made me feel I already saw enough to love Istanbul!
but be aware, streets here could be a challenge for you, better to take a comfortable shoes.
Second of all: apartment.
It was 3 of us and it was not so much space, I must to sleep on the couch. but if you're a family it's not a problem. I read a lot of comments before I booked this place and I was worried that we'll have the same problems as people had but everything was just fine. no cockroaches, no problems with hot water or whatever.
a little problem we had it was little bit cold so better to be ready if you go at winter or cold times. There are heater and AC but still you can feel the wind if you're sleeping on the couch.
the rest was great, Thank you, Ahmet, for your outstanding hospitality!