The staff was very welcoming and helpful, which I really apreciated given that I had to book this room because my original booking (at a different location) was a scam.
The only thing bothering us was the constant smell of cigarette smoke in the room. It felt like sleeping in an ashtrail. First I thought it was a previous guest, but it lasted until our leave (that was like 20h later).
Despite the room having a window, the space outside the window is closed from above, so there is no way for the air to circulate. Probably the staff was smoking outside, on the groundfloor and that is where the smell was coming from.
All in all it is well equiped and it is at a great location for those who like to be in the most bustling area of Barcelona. For those afraid of the crowds, I would recomend look for something else.