Pros:
Excellent location, right in the middle of one of the best neighborhoods in Buenos Aires.
Nice apartment, small but well distributed and equipped.
Cleaning happens everyday, which is great.
Front desk guys are great.
Cons:
Cleaning woman speaks too loud, and the building is very small, so you hear her all the time.
Cleaning is superficial, that could improve, not everyday, but a couple times a week (we stayed for two weeks).
Right across the street there is a very loud bar, so there is a lot of noise on weekend nights until very late.
It's very difficult to park on the street during the weekends, and the three parkings that are near, are always full, so be careful if you have a car.