I had a great stay of about a week in Alvaro's place. The apartment is spacious and well-equipped with everything you need: washing machine, drying rack, ironing board, pots and pans, etc. Since it's in the basement it stays very cool even during the summer. (The flipside is that the heating system gets pretty noisy at all hours, even if you're not using it.) The neighbourhood is lovely with plenty of little bars and bakeries to explore, and a huge covered market. It's a very convenient location for getting around the city. But the thing that stood out the most for me was the hosts: Alvaro in particular took the time to give me a little tour of the area and to recommend the best spots. And both he and Ignacio responded warmly to any questions. These guys are great!