Nora's place on Tres Sargentos was, without a doubt, our best ABnB experience in BA.
First of all, the location is simply spectacular. Tres Sargentos (very artisitc vibe) is a little cobble stone street in the heart of Buenos Aires that offers convenience and a relaxed atmosphere. Just across the street from the apartment are pubs and restaurants where you can get good beer and eat good food at a reasonable price. It was very nice to sit in the cafes here after a long day and drink a coffee or sip a bear and not have to be bothered by the noise and pollution of cars, as Tres Sargentos mostly has pedestrians.
The apartment itself is very beautiful and functional. It's wonderfully decorated with authentic artwork and it has a nice little selection of books to read in both English and Spanish. (I'm a huge fan of Jorge Luis Borges, a literary giant and native son of BA, and of all the apartments I stayed at in BA, this was the only one that had one of his books.) All the furniture is top notch and extremely comfortable. The bathroom has good hot water and excellent water pressure. The little kitchen comes with every convenience you need to cook for yourself and be comfortable. I would particularly like to mention the oven, which is full size and gets hot enough to make great cast-iron pan pizza. Finally, there's also a little garden area where you can sit outside and relax and enjoy a cigarette and coffee, as I did most mornings.
To finish this review, The host, Nora, was extremely helpful and promptly responded to any inquiries we hand. She also speaks excellent English, if you don't happen to speak Spanish. As a long time ABnB-er, I would highly recommend staying here.