My husband and I loved staying at Rita & Helder’s place when we were in Lisbon for my 30th Birthday weekend! Such a great location, there are always people around even late at night so it felt very safe. We were able to walk to most places around Lisbon from here, and very close to the train station that the Sintra train leaves from. The apartment was very clean and we loved the little touches like welcome pack and tips on good places to eat nearby. The only negative thing I have to say is that I wouldn't stay here if noise was an issue for you as the restaurants down below are open quite late and there are often people yelling at all hours of the night, but I sleep with ear plugs in regularly so it was fine.