We really liked Rafael's apartment. The location was perfect. La Latina is full with great bars and restaurants and only a quick walk away from the city center. We actually never had to use the metro because of the great location (we arrived in Atocha, by train).
Rafael is a great host. The communication was super easy and he is just a really nice guy who answered all of our many questions very patiently.
The apartment itself was really cute. I liked the decoration and that it was located in a traditional 100-year-old building. It was easy to pretend that we weren't tourists, but Madrilenians for the time of our stay :) which is something we're always looking for when booking via airbnb.