I traveled to Buenos Aires for a month with friends, and while the city was incredible, we had a few problems with Geoffroy's place that would prevent me from returning.
First, BA was quite hot during our stay and both ACs went down in the apartment several times. Only 1 of the 3 bedrooms has an AC unit (one in a bedroom and one in the living room) so our group had trouble sleeping.
Secondly, the internet went down many times, sometimes for more than 3 days at a time. We kept leaving the apartment to go down the street to a café that had Internet, so the issue wasn't a BA problem, just an issue with the setup in this apt.
Lastly, we had a bug problem that could not be resolved. All this caused me to leave the apt 10 days early.
While every Airbnb has issues, we were frustrated that Geoffroy was slow to reply to our messages (sometimes several days). He has a property manager on site that was very responsive, but we felt Geoffroy should have been more involved given our issues.