If you're looking for a cheap and hearty meal Bairrada is the place to go.
The atmosphere isn't overly classy but the staff are friendy and it's a great place to grab some grub (can be a bit greasy/oily at times) and catch a soccer game.
They do have a nice backyard patio -- picnic tables and all, -- but great for groups with kids.
I especially love the sangria and the garlic-beer shrimps. Yumyum! There's also a very tasty seafood platter that I've shared with a few friends.
Bairrada is also great for picking up a roasted chicken and some of those little round potatoes.