Our stay at Sebastian's place was wonderful. M. del Carmen was very welcoming and had plenty of tips on places to visit around the city. We only had a communication issue at the end of the stay. She had agreed an early check in with the following guests without informing us. So when she said she wanted to come clean the apartment at 9 am because the guests were arriving at 11.30 it felt like we were being kicked out, as our check out time was supposed to be 11 am. Anyways, we talked things through and other than that it was a good experience. The place is centrally located, at walking distance from most attractions in Buenos Aires. I recommend it.