Hami is a great person! He makes you feel perfectly at home. He took me to Tango lessons with him and I had a great time in Istanbul.
The location is really close to the 4.levent metro station and to the Havaist bus to the airport. It's convenient to get to IST airport and also not too far from downtown.
The place is artistic and clean. Hami doesn't smoke and is very quiet and clean. I would definitely recommend this place!