The house located at sintra near by Roca, you can see Pena palace and Mouros Castel when you stand in yard. The bus can bring you to these three place all the day.
The landlord is thoughtful, considering the long flight we have, she prepared some cookies and water for my kids. And send people to clean the house.
You can drive along beach to Cascais and stop at any sand-beach on the way.