Art of Living is a great hostel that I'd recommend to anybody passing through Athens on a budget. The location is perfect, within walking distance of all the attractions of central Athens (and metro stations). There was a larger kitchen setup with better cooking amenities than I've seen in other hostels, and really nice common areas equipped with couches, a TV, ping pong table, board games, etc. The rooftop is especially nice with a great view of the Acropolis. Plus, the owner is awesome and works very hard to make sure everybody is having a comfortable stay - when we had an issue in our first room, he moved us to a private for one night (free of charge).