This place is so good and such a great escape from Lisbon which has 9 tourists for every resident. We explored all over Sintra and can say pretty confidently that staying in Colares is absolutely the place to be and if we come back we would just book this place again.
The apartment is exactly what the pictures looks like.
Rita was super responsive to questions and helped us make a reservation at Adega Vadia which you should also check out.
I would recommend shortening your stay in Lisbon and spending more time here. We stayed 2 nights here and 3 nights in Lisbon. If we did it again, we would stay 4 nights here and 1 night in Lisbon.
Also, you will not need a car in Colares. We walked from the house to Cabo de Roca and it was a lovely walk. You can call an uber and get around to most places for 4-10 euro. There is also no obvious place to park a car at the major tourist places so you'll save yourself the hassle by either not having a car or just leaving it at the house.
Enjoy!