It was great to stay in Catharina´s apartment. She is very kind and friendly, as well as the building´s doorman. She was there at the apartment when we arrived at 2 in the morning, she left us the SUBTE card (we used it to catch the subway and the bus) and she gave us a lot of good tips. The place looks like the photos in the internet, there are lots of markets and restaurants nearby and the subway is about 8 blocks away (15 minute walk). The toilet has hot water and the heater was not working, but she sent us one to use while staying there (it was cold when we were there). We hope to get back to Buenos Aires soon, since it is a lovely city, full of things to do.