Guilherme, Antonio and the owner are all nice people and are very hospitable and good at communication. However, overall, we were disappointed with our stay. Whilst the outdoor space is lovely, the location is quiet and select and the local beached excellent, and the upstairs bedroom suite is very good, we felt a number of other aspects were poor.
First, the pool was unusable in October as it was absolutely freezing cold. Second, Sintra as an area suffers sea mists, cold and damp more than the surrounding areas eg Caiscais. This meant the villa felt cold, dark and damp and clothes and bedlinen suffered. There were no wall-mounted showers downstairs and the kitchen is quite outdated and needs modernising.
I wouldn't know how the villa would perform in the summer but I would not recommend in October.