The Hostel can be easily reached from the airport, either by bus, Metro or taxi.
There is a direct bus route, X95, that runs from the airport to Syntagma (Constitution Square) in central Athens, taking between 1 to 1.5 hours, and from there it is possible to walk or catch the Metro to either Acropoli or Syngrou-Fix stations, both are about a 5 to 10 min walk to the Hostel.
The Metro (Line 3 Blue) from the airport will take you to Syntagma and there you change to Line 2 (Red) and go to Acropoli or Syngrou-Fix.
There is also an alternative bus route, X94, which operates from the Metro station of Ethniki Amyna to the airport and back.