Staying at Elizabeth's apartment was a very pleasant experience. The place is quite spacious, which in our case was good, as we've been there with our 5 years old daughter.
Very near to Buenos Aires central area, specially Corrientes Street, which is one of the most vibrant area of the city, although the building is, in general, a very quiet place.
We've made most of our meals at the apartment, and the kitchen is very well equipped. Markets near. Washing machine was very helpful, and worked perfectly.
Although we haven't met Elizabeth, we were very well received by Adriana, even at 2:00am! Highly recommended!