What I liked: Location, location, location. It's within walking distance to the train station, walking distance to downtown historic sites. Many places to eat close by. Behind the hotel you can find Gaudi's Vicens House. Unknown to me, I wished I've known about it earlier. Definitely front desk staff are very kind, but they do not volunteer information. It rained buckets when we were there, the hotel lends you umbrellas, which is very handy. The hotel is clean. There's a locker where you can store your luggage for a few hours.
What I didn't like: cumbersome communication via email, they don't acknowledge emails sent via Expedia. It's hard to know when you are traveling if a random email you get is indeed from a reliable source. The room was tiny, walls are thin (you can hear your neighbors, unless you fall asleep very tired from exploring, then, who cares?), our first floor room allowed us to hear too well the partying people on the street (see earlier comment), the bathroom was sooo small, towels very, very worn, and you must ask every day for clean towels otherwise you won't get any. Just FYI, keep the bathroom door closed because it's an echo chamber and you'll hear amplified conversations from your neighbors. You can get an espresso from a machine in the lobby at 2 euros each, water refills next to the elevator are free. I will stay again, just with minimum luggage and the knowledge of how to navigate the place.