I have stayed in many airbnbs all over the world and this has been my absolute favorite experience.
The apartment has a magnificent view to Buenos Aires ex-zoo, you can still see (and hear) some wild life from there. The location is definitely one of the best ones in Buenos Aires, there's many amazing restaurants and cafes all around and you have Bosques de Palermo a few metres away.
Carmen is an amazing host, she was always available for me when I had questions, always willing to help me.
I absolutely recommend this Airbnb and Carmen as a host, and I would love to come back!