I stayed in Matt's building (he owns the entire building) for over 3 months. I was very well welcomed, and everyone involved with the building did everything to make my stay as good as it could be. The care-takers Andres and Pablo are so nice and are always available to help. The cleaning ladies are great and can come as much as you need. The building in right in the middle of Palermo Holywood, close to loads of the great restaurants and bars. May be a bit noisy at times but it's part of Buenos Aires' vibrant life, all the while very secure. Thanks Matt!