This is good place to stay in Buenos Aires. Location is simply perfect: just one block away from subway, plenty of buses nearby and a big supermarket (Coto) two blocks away. Walking distance to Palermo Hollywood/Soho with plenty of trendy restaurants, ice cream shops (Argentinean ice cream is simply the best in the world) and other beautiful shops and squares (like Plaza Serrano and Plaza Armenia).
Agustin was a great host. We had several problems in the apartment, none of them was his fault, and he made sure to solve them.