I was only the 2nd guest to stay here. I read the 1st review and I can echo its positivity -- great place, great host, great location! The balcony in particular is a great spot to chill and relax after a long day of exploring. Even the bed is solid. The building is close enough to the action without being in the thick of it, which means peace and quiet most nights.
Since it was a new listing, I asked Joaquin to add a few more items that I was accustomed to seeing in other AirBnBs, and he accommodated immediately!
(For travelers who are new to Buenos Aires: newer construction buildings in BsAs tend to leak some noise, I can say from my extensive BsAs experience. This apartment is the same, but I found that covering the front door gap by the floor with some dirty laundry helps a bit. Again, this is not a knock against Joaquin's listing, but is rather a warning that most places will be like this. That said, I WFH and was not disturbed at all by the noise in this building).