The Travel Guide to Mexico City shows the most amazing things to do in 3 days in CDMX. Best street food and tacos, day trip to Teotihuacán, the modern art of Frida Kahlo, Lucha Libre fight in the oldest stadium and the Mexico City nightlife. We stayed in an airbnb between La Condesa and Roma which was beautiful and safe accommodation, that I would recommend to everyone for staying in Mexico City.