Travel

Fly into Lisbon (LIS): 3 hour drive north to The Palace OR take a train from Lisbon to Porto and drive 45 minutes
Fly into Porto (OPO): 45 minute drive east
Rental cars available at airports as well as local transportation
Lisbon and Porto are great cities to stay and visit, please don't hesitate to ask for recommendations
Stay: if not staying at The Palace check for local AirBnB or VRBO in the Douro Valley