Mario's apartment was great! We stayed for one month and it was perfect for a long-term stay. The apartment is very spacious, fast internet, clean, and it has a huge kitchen which is really nice to cook in. The location is good, right down the street from a big mall, but it's about a mile walk to the part of Palermo with the best restaurants and bars. This wasn't a problem for us because we like to walk :) And there are plenty of restaurants and cafes directly around the apartment. Mario was a great host and was easy to communicate with. We would love to stay again if we're back in Buenos Aires in the future!