Carina's place is cozy, comfortable and very stylish. Located in a new building in the Palermo area, it has everything you expect for a nice stay during your visit. The bed was very comfortable, and the extra guest toilet is great if you're sharing.
There are plenty of restaurants and shops nearby, and it was always easy to get a taxi to get further out (which you will need as Buenos Aires is huge).
Carina was very responsive in all communications, and put in extra effort to ensure our stay was comfortable. Unfortunately we didn't get to meet Carina in person but she made sure everything was smooth through the porter of the building.
Highly recommended for your stay in Buenos Aires!