I stayed here for a month and loved the apartment/house. Spacious rooms, a lovely roof terrace, laundry room and other great facilities. On top of that it is located in the heart of San Telmo, with lots of great bars, restaurants and shops nearby. I changed from this room to another on the 2nd floor because it was more spacious and had a balcony. So I can't give a review for this specific room. What I can say is that the place has a lovely atmosphere.
The cleaning lady comes three times a week, so overall it's pretty clean, but the kitchen was still pretty dirty between her visits. I blame that on the other roomies, though.
It is a noisy neighborhood because of some pubs and especially a karaoke bar in the same street/building, so if you're a light sleeper, I wouldn't stay in any of the rooms with balcony's headed towards the street. That being said, I felt safe and loved the location of the apartment. I met Vicky a couple of times, and my impression is she is very nice, fair and easy to communicate with. Also, Rodrigo (who lives there) was very helpful with keys and information upon my arrival – but please note that he doesn't speak any English. Overall, I would highly recommend staying in this apartment.