Grisel was very welcoming when we got to the apartment, she gave us tips on how to get around the city and gave us several adresses of good restaurants.
The apartment is very beautiful and very clean, albeit a bit cold because of the central heat. It is also very well located (walking distance from Placa de Mayo and Av. 9 du Julio, and there is a great market on Calle Defensa on Sundays).
We loved our stay there, and would definitely stay there again.