Bernardo and his wife, Gitte, were wonderful hosts. We stayed 3 nights with them at their home, just a few blocks from the Zocalo and minutes from the metro. They were both very accommodating, and Bernardo provided us with a map of several areas in DF along with recommendations for museums, food, etc. (Like many others have mentioned, Los Cocuyos is a must- perhaps the best tacos I've ever had). Their home, while centrally located to many tourist attractions, still maintains a neighborhood vibe, and the history of the building is quite impressive. Also, the homemade bread and spreads that Bernardo and Gitte provided us were a great way to start the day. Overall, we had a nice stay and would definitely recommend this spot if you're passing through DF.