Staying at Alvaro's was really lovely. Both he and his roommate are really nice, and a pleasure to chat to. The place was as described, except for the fact that the bed was in fact larger than in the photo, which was a really nice surprise. The neighbourhood is really nice, and one can walk quite easily to the city centre or the University, both these walks take about 25 minutes. There are also plenty of buses.
All in all, another great airbnb experience.