We really enjoyed our stay! The apartment is exactly as advertised and as described by other reviewers.
Additional points that one might want to know:
1. There was a pleasant welcome package left for us that included a bottle of Malbec, fruit, dulce de leche and some alfajores (thank you, Roxana!).
2. The water pressure was amazingly good (I just expected it to be worse for a historic building) and the water heater was great!
3. We visited in winter so it was a little chilly outside. The apartment has two ductless HVAC units (one in the living/dining area and another in one of the bedrooms). Additionally, there were two electric heaters in the bedrooms. All of that provided adequate heating of the place.
Roxana, the manager of the apartment, was really pleasant, helpful and quick in answering all our questions. Overall, we highly recommend this apartment and would love to return someday! It was a home away from home!