Athanasios apartment is excellent, located in a very safe area of Athens and with a metro station in the airport line just 4 minutes walking. Also buses from the airport stop nearby. One can easily walk to the old town (Plaka) and to the Akropolis, with many interesting things to see on the way. The apartment is clean and has everything anyone needs for a short stay. The communication with Athanasios was excellent. I will book it back if it is available when I go back to Athens.