Adriana's place is wonderful! It's larger than the photos indicate with really high ceilings, an old time elevator in the building, and 2 balconies. Adriana was very responsive to all our inquiries and provided the apartment with maps, brochures for various tourist attractions, adapters for outlets, and subway cards, which made it very easy to start exploring the city right away. The apartment is also very well located - we were able to walk to all the neighborhoods we were interested in (Recoleta, San Telmo, La Boca, Palermo, etc.)
One tip I would add is to avoid walking around the area late at night by yourself, as pickpocketing/muggings do happen. I.e. exercise reasonable caution, the way you would in any major city.