Mariana has a wonderful house and garden not far from Lisbon, next to the connecting road leading to Sintra and Lisbon.
We stayed in Sintra for 6 days and had exceptionally cold weather and had some bad experiences with the restaurants in the neighbourhood, but Mariana's place made up a lot for our disappointment.
Let yourself be informed by Mariana's food tips! I highly recommend staying here if you find yourself in the vicinity of Sintra (at a good distance of the tourist hubbub but close enough to walk to all the sights)