Onrigada, Manuela! This place is a really beautifully decorated little home, a great spot from where you can explore Sintra and Lisbon easily.
We had a car with us and parking was no problem. The apartment is as shown in the pictures, had everything we needed (e.g. for cooking) and Manuela also provided an extra heater as it is obviously still quite cold in February. And she recommended nice cafes and retsuarants and sights to see and provided us with a "food starter kit" - muito obrigada!
As for what other guests mentioned: We heard the neighbours dogs, but it did not bother us.
So I would definetely recomend staying in Manuela's place.