Sim kind of wrapped up Porto last time, but let me add my two cents. Portugal generally was fine. I would rather have been there than in the office. But for my money, I prefer Spain. I like the food better (except the tarts in Portugal, the tarts are great); the cities seem less likely to contain massive hills you have to drag your luggage up; the language is basically recognisable if you speak a smattering of any other Roman language. Portuguese is decipherable if written down, but aloud it sounds like French being spoken by a Russian.
So yesterday, I was happy to return to Spain, despite their absurd ideas about it being appropriate for a bakery to be closed until 9.00am. We flew from Porto to Bilbao via Lisbon. Our luggage flew from Porto to Lisbon, and no further.