It was really a nice experience to stay in Ilir's apartment. It is located in the usual residential area with many local shops. Tram, metro and ferry stop is within walking distance. I would not recommended it for a really short stay in Istanbul but once you understand the public transport little bit you can very easily reach any city-quarter you want.
The apartment has nice design and the room is cute. Big enough for 1 person, but not really big. You soon get to feel almost like home here. Beside your own room you can use shared bathroom, shower, kitchen and dining room with big table. All is clean enough.
And Ilir is aways online to answer whatever question.
Highly recommended!