Carolina was super easy to communicate with! The apartment is just like the pictures and it is super clean!
The neighborhood is filled with treats: near Los Arcos for shopping; LattenTe for the best coffee in town; Las Pizarras for great food; La Carniceria for argentine sweetbreads; Don Julio for authentic argentine barbecue and Uco restaurant for brunch...and many, many more, all at waking distance. You can also walk to the zoo or La Rural if there's an exhibition.
I highly recommend staying at Carolina's while in Buenos Aires!