The bedroom we chose was spacious and clean, even came with heaters inside the closet for use. Doors are lockable but they are quite loud, especially in the middle of the night.
Amenities were good: The apartment came with a fully working kitchen but we didn't get to use it. Bathroom was adequate, but was a bit cozy. Also note you'll likely be sharing with 3 other rooms if it's a full house, so expect a wait time in the mornings :)
Overall the apartment was comfortable, very good location - walkable to La Ramblas and just 1min to the metro. It's right next to a Cathedral and the bells toll every hour (or so) so something to note for light sleepers. And the flat is almost at the top floor (5/6 floors up), so not one for wobbly knees :)
Jesus was quick to respond, and his friend Gloria was on hand to help with check-in and out - very smooth process overall.