We had a great stay at Oscar's apartment- it is small, but its in a great area and has everything you need. This was our second stay in This apartment.
Oscar is one of the best hosts we have ever dealt with. He met us to show us the apartment, offered ideas of things to do, he even came to our aid when we had some problems (not related to the apartment) interpreted for us and let us have stuff delivered to his home address. We really felt that he was their to make our stay in Buenos Aires as enjoyable as possible.