Aysun's place is just great - apartment is spacious, clean and has everything you need!
The area nearby is also great: Taksim square with all the public transport, airport bus arrives just 5 minuts walk, and there are many really great places to eat or to have coffee. Try mexican Cantina on the same street - they serve amazing things!
Check-in process was also easy and clear. Even though our flight was delayed we managed it w/o any problems.
Definitely recommend everyone to stay at Aysun's!