We stayed at Anahi's apartment for 2 weeks while we studied at a Spanish school near by (Verbum, 10mins walk away). Anahi was extremely welcoming and went above and beyond to help us settle in when we arrived, she was also responsive and eager to help if we had any problems. There is lots to do in the Almagro area (bars, tango shows, live music at the CC Konex center a few blocks away etc) and the apartment is well connected with public transport.
If you're looking for a comfortable and good value place to stay in a cool part of town then this is a great choice!