I stayed in four places while I was in Argentina and this was by far the best (and also the best value). I didn't meet Mirta in person, but her two friends Mariana and Martin were really helpful. I had a small problem with one of the windows while I was there. But Mirta's friend helped me out and we sorted it very quickly.
The apartment itself had everything I needed and was clean. The bed was really comfortable and I had good nights sleep while I was there. The view from the apartment was also great. However, it had nothing on the view from the roof which was stunning both day and night. I was in Argentina for a work conference which was at the Hilton, and the view from Marta's place was far superior to the one at the Hilton!
The facilities in the building was fabulous. As their photos show- two great pools (one upstairs also with a great view), sauna, steam room, a gym and upstairs working area. There were also washing machines to use. If I come to BA again I would definitely stay at this apartment again.