Matías is a very good host. The heater broke when we were there and he quickly calmed us down, saying it had happened before and that he would deal with it. The weather was quite nice during our trip, so thankfully the heater wasn't really missed. The house is in great condition, and makes you feel at home in no time with all its quirkiness. The neighborhood was quite calm, though obviously walking around late at night is not a good idea if you're not familiar with the city.
All in all, me and my girlfriend are really pleased and had an awesome experience at Buenos, and glad to have chosen this apartment to have as our home for a week.