Location, location. Grocery store right next door. Several restaurants within 10 minute walk. 59 or 92 bus to downtown 128 bus to alto Palermo shopping mall and the D line subway (or walk 15 minutes).
If you are going to be more than a few days get the SUBE card at the nearest post office to use on bus and subway, very convenient.
Maria and Mariana were very helpful providing info on things to do and places to see. They arranged our ferry trip to Calonia and our taxi to the airport.