Good accomodation, 3mins by walk from Kerameikos metro station (line 3 - direct from/to the airport, 1 stop away from the Monastiraki).
Clean apartment with all the facilities (AC, fridge, smart TV, washing machine, hair dryer..), quiet neighborhood, 1min from a supermarket, a few minutes from various restaurants, bars..
Very easy self check-in, good communication with the host.