We had a great stay in Maries Apartment. It is modern, everything you need is there, it is clean and nice and safe place. The neighborhood is great, international with a lot of good restaurants, small shops, supermarkets and nice places are not far away. Luciana was our contact in Buenos Aires and she was very friendly. Marie provides a list of restaurants, shops etc. she recommends. We had a few rainy days and though we had to stay in the apartment with our one year old son, we never felt trapped, since there was enough space in the apartment. We also appreciated the dishwasher. The guests may use the washer / dryer in the house - but coins are needed and it is a little difficult to get coins in Argentina.
We would always like to come back, it was a very nice place!