There could not be better hosts. Carolina and her mother are very attentive to our needs without being intrusive. The apartment is great, well decorated, clean, not far from the National Museum and the old city (where most of the tourist attractions are placed). Besides, it's very close to the subway station and therefore accessible from both the train station or the Port, even walking (+/- 30min).
This was easily the best experience I have ever had with Airbnb, and I have been using it for 10 years now!