I was a solo traveler and stayed at the hostel for 5 nights. The location was perfect, just a short walk from Plaça de Catalunya. I had booked a room with a private bathroom, but I noticed it wasn’t directly inside the room — instead, it was just across the hallway. It was still private, as you needed a code to access it.
Both the bedroom and bathroom were cleaned daily, and the bed was comfortable. There was also a common room with a water dispenser, tea, coffee, and milk, and each morning the staff prepared a small snack bag for guests.
Everything was very nice, the only thing I could point out is that the rooms are not very well soundproofed (you can hear your neighbors), but since I had earplugs with me, it didn’t feel like a major inconvenience.