Irem apartment is very comfortable, smart, and air-conditioned: photos are very reliable. It’s located in the heart of Istanbul movida and is very close to the city centre.
Before choosing Irem apartment I read comments below and I was a bit worried about noise the other guests wrote about...but actually it was just pleasant music (if you close the window you do not hear it anymore) and personally I used to open the windows with intention just to create atmosphere.
Irem offered me even an excellent transfert service from airport-appartment and back. If I decided to come back in Istanbul I will come back there for sure.