Augustin is really responsive and helps out with some good advices. I got the key from the doorman/ security which was quite unproblematic. The apartment is well-located.
Unfortunately there’re also some drawbacks… thus the gym has only nonfunctional equipment. It’s really loud and the apartment is not really daylight friendly… if this is not a problem for you it’s a good pick, however, all in all Airbnbs in Buenos Aires are just too expensive to what they offer…