Ines was a great host, even though we were never able to meet in person. I made very last minute reservations and she was able to accommodate me and my girlfriend without any issues. The apartment was lovely and Ines was consistently available for questions via whatsapp and the landline in the apartment.
It's located in a very nice part of San Telmo, just blocks away from "la feria de San Telmo" and various attractions of the city. We had no problems navigating Buenos Aires from the apartment with bus and metro stops nearby (you'll have to get a SUBE card but that's very straightforward).
The apartment itself was also excellent. The pictures barely do it justice, there is a wonderful natural light that comes through the windows (just close the blinds if you're looking to sleep in though!). There's a spacious room with a couch that can sleep someone and a lovely bedroom with a comfortable bed and extra blankets. The AC is easy to use and well functioning. The kitchen was a bit on the small side, but it had all you could ever need (oil, seasonings, pots/pans, plates, etc).
I would certainly recommend this apartment to a friend or family member.