Silvia's place is wonderful! I can fully recommend staying here. Centrally located in Recoleta with everything you need in regards to groceries, pharmacy, restaurants, bars and museums all within walking distance. Recoleta is a beautiful neighbourhood and Silvia's place is in a great location to access the metro to get to other parts of the city. The apartment can be a little bit noisy as it is in close proximity to a local hospital, so there are ambulances on avenida pueyrredon but the building itself is very quiet.
I found the space to be very comfortable and more than enough living room for one person. The bath tub is a great feature, the kitchen is super functional and the beds are very comfortable. I stayed in this apartment for three weeks and didn't have any big issues come up at all. Silvia was a great help for me during the stay and accessible to answer any questions I had about the city.