The good: clean, safe, quiet, very near the Sants train station, many restaurants nearby, good shower, hot water. The host is gracious.
The bad: extremely small, windowless room, tea kettle only. Hard bed, no blanket, fan did not work.
I stayed here in order to stay overnight near the metro Sants station. For that purpose, it was adequate, but it is not the sort of place that one could use as a place from which to explore Barcelona.
Perfectly pleasant, perfectly gracious, but small and not terribly comfortable. I certainly could recommend it for an overnight stay in transit, but not for anything more than a night or two.