Stop reading comments, just book this Air bnb already ! :D It was one of the best air bnb houses we've been to so far and we loved everything about it:
1. Parking infront of the front door
2. Thoughtful and modern interior
3. Cozy bed
4. Well equipped kitchen
5. Bar around the corner which you don't hear in the evening but with really nice staff giving you lots of recommendations for the surrounding
6. Lots of recommendations from Philippe
7. In our case: Getting provided with coffee, a small bottle of wine and some cold drinks 😍
8. Philippe being flexible with our check-in
9. Perfect walk into the historic center of Sintra
...
I could go on but just go here and see yourself! :)