Great stay at this hostel. Gaia is run by a woman named Judit who is extremely helpful and easy on the eye too. The location is okay, less than a minute from the nearest metro underground stop.
great chilled atmosphere, easily the best hostel I've stayed in.
if you go out at night you will most likely have to get a taxi home unless you wait for the metro to reopen at around five. There are eight flights of stairs and no elevator so you had better hope you don't get a room on the top floor. If you want bed covers or towels you will have to put down a deposit and less money in the pocket is always a negative while backpacking.