We stayed at Mauricio's place New Year's weekend. He greeted us as we arrived, and even gave us a tour of his favourite restaurants in the area. He responded very quickly to any questions we had before and during our stay, and had created a pamphlet of reccomended places to visit.
The apartment looks just like the photos, and is very clean. It was very easy to get around by public transport or by foot — I especially reccomend this place if you are seeing a match at Camp Nou, which is a mere 10 minute walk away.
I've got nothing bad to say about the apartment, the area or the host — all in all a lovely apartment and a very lovely man! Would gladly stay there again.