One of our best airbnb experiences so far. The Chapel is an amazing place to stay. We traveled as a couple, and even though the Chapel has quite a large space with high ceilings, it still somehow felt quite cosy and not too big for just us two. It's very well furnished, with a great kitchen and shower.
Filipe, our host near by, was very friendly and helpful. The breakfast box each morning was fantastic. Communication was easy and the A Capela team were always quick to respond.
They also have a private parking space just 2 mins walk from the Chapel. Which was invaluable, as by late morning once the day trippers arrive from Lisbon and elsewhere, you'll be lucky to find any sort or parking around Sintra.
I wouldn't hesitate to stay again or recommend the Chapel to anyone visiting Sintra.