Andrea and Catalina's place was the first out of two apartments during my first ever stay in Buenos Aires. Even though I arrived very early in the morning, Andrea was already waiting at the apartment, ready to explain all the little details about the place and the city in general in the most friendly way. She even took the time to walk with me around the area of San Telmo, visit the weekly Fería de San Telmo, show me the best places to eat and generally answer all of my questions. This really helped me to feel comfortable and at home right away. Throughout my stay she kept in touch via WhatsApp and when I decided to stay a little longer than originally planned, is was not a problem at all.
The sofa/bed is comfortable for one or two persons to sleep on. One of the things I enjoyed the most was having my coffee or mate outside on the balcony in the morning sun.
The building itself is very modern and I always felt safe, by day and by night, the street always being busy and with good lighting. Parque Lezama is nearby, as well as a variety of food places (I recommend Hierbabuena), a supermarket, pharmacy, etc.
For my next BsAs visit, I would not hesitate to stay at this place again.