I had a pleasant stay at Maria's apartment. I was in Barcelona for a conference at the UPC. This apartment was in a great location. It's very close to the university (10-15 mins walk), and a 5-minute walk from the train stop, which means I could be in downtown in less than 20 minutes. The neighborhood is safe and pleasant to walk in even at 3am. The room is clean and private and the 24 hour lobby is very convenient.