We had a lovely stay in Sintra at Carole and Stuart's. They were very good hosts. The apartment is very comfortable and spacious for 2 people, with a great view and very quiet at night. It was well equipped and if you needed anything Carole would help. It's great for accessing Lisbon and nearby beaches as well as local sights of Sintra, so you don't need a car. The train system is excellent and pretty cheap. Carole puts food in the fridge for you for breakfast on your arrival, and then you top this up yourself as you go. Both her and Stuart were friendly and helpful. Would love to go back!