We had a wonderful stay at Sofia's place in Lisbon. The location is great: a 20-minute walk from the central areas (Baixa, etc), and a shorter walk to lovely neighborhoods like Principe Real. The apartment is petite and adorable. And although we never met Sofia, she was very helpful, suggesting all sorts of things to do and providing printed materials on Lisbon activities and transportation. Her whole family chipped in, too -- her mother greeted us, her son helped us into the apartment, and her brother provided some tips. Highly recommended.