I highly recommend Carlos and Elisa's apartment. The pictures are exactly as advertised. The kitchen is fully functional, the dining room table is perfect for working and eating; and the one bedroom is very comfortable. The bedroom has a firm mattress and windows that face other buildings (not the street)! The apartment truly is quiet; it's impossible to completely shut out the street noise in Buenos Aires, but this apartment mutes the traffic noise almost completely. With earplugs I didn't hear a thing at night. I was there in winter, so can report that the two heaters-- one in the living room and one in the bedroom--worked perfectly and kept the apartment very toasty. The WiFi is fast.

The location is secure, with a 24 hour portero (doorman). The location is also excellent: half a block from the main shopping boulevard, with easy access to buses that will bring you almost anywhere in the city. Carlos and Elisa leave you a rechargeable card used for bus/subway, as well as a rechargeable cell phone; both are really helpful. A grocery store and a fruit/vegetable stand are on the same block.

Carlos and Elisa are thoughtful and responsive hosts, answering emails and text messages right away. I stayed for three weeks and someone came every 3-4 days to clean and change towels & linens. I would stay here again.