Emilia's apartment is extremely well located... we walked to both Recoleta cemetery and the city center one day, and to Bosques de Palermo park on the next. There are lots of amenities and nice restaurants on the streets nearby, and we really felt like we were living in the city and not just tourists for the week!
About the apartment itself, it was super clean, and the bed was quite comfortable. Also important was that the bathroom is modern and spacious!
We had a wonderful time in Buenos Aires, in no small part due to our wonderful accommodations and kind host.
I would fully recommend this apartment to friends.