We had a very nice time staying at Maga's place - it is an old-style accommodation with character, high ceilings, and a particular layout, located in a period building. We had a lovely time sitting at the terrace in the evening and in the morning.
The flat is located within a short walk from the centre of San Telmo, and close to several bus stops that serve different parts of the city 24/7.
Maga herself is very responsive as a host, and was very friendly and helpful at all times.
We would recommend the place to anyone visiting Buenos Aires.