The hosts were fantastic! Super friendly and helpful - not only did they provide me with a long list of suggested places to eat in the area when I asked, but they also left Time Out magazines for information on what to do in Lisbon. They responded really quickly to any question and kindly booked a taxi for us the morning we left.
Barrio Alto is a great location - close enough to walk to other areas. It's bustling in the evenings and there are plenty of places to eat and drink. I'd recommend booking a restaurant on a Friday night as it's too packed to show up somewhere and find availability, unlike Thursday and Saturday evenings (we found). The apartment is sweet, quirky, clean and the beds are really comfortable. We found the people of Lisbon extremely friendly too. Highly recommended!