Ricardo has an awesome airbnb. Although he was away during my stay, he was very communicative and helped me get in contact with his co-host Marcos with any questions. His home is in a hip downtown neighborhood called La Latina, on the green metro line. You can get there without difficulty from the airport. There are small grocery stores nearby and a big Carrefour a 15 min walk away. I found it central to everywhere I wanted to go. The room is beautifully appointed with large windows and a fan for the summer. Slept like a baby, haha. Ricardo is very organized and has helpful notes written around the apartment to answer common questions. I felt very happy to stay there and recommend it highly.