Thank You Team Room018 BCN
It is close to the Barcelona Sants railway stantion and easy to get to.
The rooms are tidy and have few beds, so they are not overcrowded.
The breakfast is as usual: cereals, toasts, jam, juices and tea/coffee.
The hostel asks a 5 euro deposit for the room key and 5 euro more as a deposit for a lock for your locker. If you are very short on money, it might be a problem.