A great place. Near the metro station Line 1( Green) the one that takes you to Monastiraki station (to go to Acropolis and the Flea Market)
The apartment was very clean and comfortable. The wifi worked great.
The neighborhood was quiet and safe. The walk to the train station was not long. The green line connects to the red and blue line, so it makes it easy to get around.
From the airport the taxi was about €40 and about 30 minutes away.