The apartment was very good, nice and clean. Andreas is perfect host. Ha recommended good restaurants and places. He left coffee, water, cookies for us.
The metro station is only 2 minutes, and the main market is 20 minutes by walk.
If you have a car, use the parking house near by the apartment, it's very close (50 meters) and cheap (5 euros/day). Don't park on the street! It's free, but not safe in Athen!
I recommend this apartment.