We had a wonderful stay at Geraldine's place in San Telmo. She was very helpful and was fast answering any questions. She was a great host and helped make out stay that much better.
San Telmo is a great area to base yourself in BA. The tourists and locals seem to blend seamlessly and the area has real character and many great cafes, bars and restaurants. The apartment is well based for a short walk to the lively areas around the square and market, and if you don't mind longer city walks then other neighbourhoods and city sites are easily reachable.
The apartment is not slick but, like the barrio, has plenty of character, and quickly became our home from home. It's charming with a small courtyard which was a great space for breakfast. It's well equipped and has air con. which was much appreciated considering the time of year we visited.
We would definitely recommend a stay at Geraldine's place in San Telmo, especially if you like a little bohemian atmosphere.