We stayed in this apartment for one month and had a really good time.
Its only one room (plus bathroom), but there is enough space to cook, eat, store your stuff and sleep. The bed is really comfy, maybe too comfy :D.
The apartment is also quite bright, but (maybe also because of spring) the sun does not reach the balcony at any time of the day.
We also used the gym nearly every day, as it is not so easy to make sport in BA city. It is a small room, but enough space to do a little workout.
The neighborhood is very save, we never had problems. The next subte-parada is two blocks away: Congreso de Tucuman, linea D.
The communication with Victoria was really good, she answered quickly every time.
Thanks a lot! Saludos :)