Next time I would choose this hostel again.
+ stunning building
+ private bathroom
+ cool room
+ nice friendly staff
+ late check-in is not a problem
+ you can leave your bags before/after check-in/out and go for a walk
+ coffee/tea/hot chocolate
+ kitchen area is nice, also has a relaxing balcony
- one kitchen for two wings of the hostel, if you need something and live in another wing, you’ll need to walk through 2 entrance doors
- pricey as for hostel, but maybe it’s about Barcelona stay in general