Rosario and her brother Mariano were very friendly, Rosario answered all my questions very quickly and friendly. She picked me up at the airport for a fee and let me stay a bit longer in the apartment on my departure day. She explained everything in the flat and the rules.
The apartment is in central location, Plaza de Maya, Casa Rosada, Puerto Madero and the Recoleta Cementary are within walking distances. The are quite a few restaurants in the area.
The building is a bit older. You find everything you need in the apartment but all is well used.
The washing machine didn't work but Rosario offered to pay for laundry service which I thought was very nice.
Inside the building it was very quiet with the exception of the elevators, they are next to the apartment and you can hear everytime they move. At times there is trafficnoise from the street but then you are in a big city, that's to be expected