This is the absolutely most perfect place to stay in Buenos Aires. Carolina was out of the city when I got to Buenos Aies, but she was still completely attentive to me and any questions I had, very sweet woman! She arranged for a friend of hers, Hernan, to let me in. He was extremely kind - he even made me mate (Argentinian tea) when I arrived!
The house is impeccable, the design has a warm rustic feel, and you have the whole second floor to yourself. There's lots of natural light, the decor is perfect. The heating system was great and I always had hot water.
San Telmo is also the best neighborhood ever, and Carolina's place could not be more central located. Everything is perfect, I cannot recommend it highly enough -- you should stay here!!