Suggestions for a solo week in Portugal? Should I do both Lisbon and Porto? Or just Lisbon?

Hi friends,

I have a free week before I start a new job next month and desperately need a break somewhere. I originally wanted to do Florence, but flights from where I am in the southeast U.S. are predictably terrible due to the busy season and the last minute nature of the trip .

Lisbon is coming up as a more direct, available option, and after some googling, I feel like a few days in Lisbon to explore the city and visit Sintra would be great, but a week might be pushing it?

Should I fly into Porto , do the Duoro Valley, and then take the train to Lisbon and fly out from Lisbon? Or just do Lisbon for the whole week and leave myself time to have chill, do-nothing days?

Would love any suggestions!

Travel time: July 17-24

Budget: None

Interests: Sightseeing, food, wine, sailing, kayaking, art, books.

Places I’ve looked into: Lisbon, Sintra, Arrabida, Porto, Duoro Valley, Time Out Market, LX Factory, Airbnb experiences.

Suggestions for a solo week in Portugal? Should I do both Lisbon and Porto? Or just Lisbon?