Good, inexpensive restaurant
We were vacationing in Laredo last week and a place I enjoyed eating at was La Casona. It’s next to the promenade, the second street before you reach the harbor, only 2 minutes away from the historic town center.
During the week we were in Laredo we went a few times and they have a wide variety of tapas and full plates, which makes it great for snacking. On Sundays, they have shrimp for and tentacles (which are like fried squid legs, very tasty) for only 1 euro.
It's a fairly cheap restaurant. When we went for full dishes it worked out at 15 euros between the two of us and we ate until we burst. We asked for a “sartenada” ( a skilled of fried eggs, potatoes, and plenty of chorizo and black pudding for only 7 euros, I think), and we also ordered some delicious Cabrales (Spanish blue cheese) croquettes for I think about 2 euros and mussels with homemade tomato sauce which, if I remember correctly, were 4 euros or so.