Filipe and Vera both got biology phd in italy. They are very nice ,friendly and knowledgeable. They gave me valuable tips for travelling sintra which is different from the way most tourists do -- taking 434 bus. They suggested villa sasseti trail, five lakes, quinta da regaleria, high cross and the palace of the king's second wife. The whole route was so natural and beautiful. The house is so clean with delicate decoration and they prepared super luxurious breakfast and heater that keeps you feel warm in winter.