We stayed for one week in Gabriela's apartment, and it was very, very nice. The first days the wifi wasn't working, but after a few days it was fixed and we had no more troubles. Gabriela's sister Gisela also did an amazing job when the gas was cut off, and before we were back in the afternoon, she had arranged for a new heater running on electricity, and we could have hot showers again. The place is very good for a couple, it is close to public transport, you can walk to a lot of restaurants in the neighbourhood and it was lovely having breakfast on the terrace with all Gabriela's plants around you. Both Gabriela and Gisela were quick in responding on e-mail whenever we had any questions. Definitely a good place to stay in Buenos Aires - if you don't mind the sound of traffic.
Pernille, Copenhagen, Denmark