I stayed 8 days at Gabriela's apartment with my girlfriend and it was really great. Her sister and brother in law were there to great us and were very helpfull. The apartment is very very cozy, clean and is very well located. Close to subways, Cafe Tortoni and Casa Rosada, the neighborhood is great and full os great places near by to eat and enjoy.
It was a real treat staying there and I totally recomend it.