Maria's place is very comfortable and quiet. It is a new and spacious apartment in a secured building with modern amenities and everything needed for a short or long stay.
The location is good for exploring the city. If you are a walker like me, it is possible to walk to key places like San Telmo, Centro and even Puerto Madero. The closet subway station is about a 5 minute walk and from there you can get to just about any place in the city.
Maria is a very responsive host and she was very helpful with information and things to do and see in the city. I highly recommend her place.