It was my first time in Buenos Aires and I stayed in the apartment for one month. Overall it was a good stay, here are some pros/cons to consider:
Pros
Fantastic location in Palermo Soho, very close to everything you need/want, including restaurants, bars, public transportation and green spaces (Jardin Botanico etc.)
Comfortable office chair for working from home
Sufficiently spacious for one person, maybe two
Host was responsive and addressed any items that I brought up during my stay :)
Cons
Very firm mattress, but this is more common in latin america
The apartment was light on supplies for a one month stay, e.g. towels, kitchen items etc.