We were lucky to taste the real cuisine and music and traditions. Well, I guess it is the thing to spend a few days in one city to get to the good places and meet the real feeling about that place. It was one of the small typical Portuguese restaurants in the centre, but you can also check this link and choose when you visit Lisbon.
We had a nice but different cuisine and music experience in Porto, but the weather turned very bad so didn't stay there for longer, just one day.