This is an awful, very dirty, highly unfriendly dump with ancient, dangerous bunk beds (that easily tip over when the occupant of the upper bunk tries to climb down) and dark, cramped rooms where they try to stuff 16 people, contrary to the representations being made on various booking sites! Internet WiFi works only sporadically, as do the locks on the small lockers. It is also a very steep climb on slippery stairs with non-operational lifts (elevators).
DO NOT STAY THERE under any circumstances, unless your objective is to fully ruin your holiday in Barcelona!!!
Personally, I would have rather slept on a bench in the main train station ...