The Sant Jordi Arago Hostel in Barcelona is a bit smaller. They organise several times a week some entertainment (bars, pubs, restaurants, parties, ...). So it is a very good place to get into contact to other travellers. At least one Raildude already stayed here overnight and can recommend this hostel.
Prices and more information (exact details), as well as photos, can be found on the booking page (right button).