We were staying here as a stopover on our drive North. It is perfectly located if you have a car, or even if you don't (we often walked down to Sintra town and you can easily jump on the train to Lisbon for the day, which we also did - it is a nice way to get into the city with no worries about parking etc).
Philippe was there to welcome us and sent us some excellent recommendations, all you could need really.
We found the apartment super cosy and warm (given the temperature can drop a little in Sintra), with some fun in the art collective of the walls to enjoy.
Highly recommend - no issues from us!
Lewis & Siri