I have stayed in Buenos Aires eight times for almost a year and half in total (both alone and with kids), and this is by far the best Airbnb I have stayed in. The location is perfect (in a safe, developed, stylish neighbourhood, close to the train and subway), the apartment is well-appointed (with a washer, dryer, and AC units in each room that work well), comfortable (I think the bed is more comfortable than the one I have at home!), and Maria is an incredible host. Many places get 5-star reviews but this one truly merits it.