I got sick the day after eating there, and I think it was related to the steak, which had an aftertaste between vinegar and solvent. Far from good. So stay away from the fresh food and focus on the rice, bread and beans.
Panza restaurante is a canteen, with a buffet during lunch hours (12 to 14pm). You take everything you want on your plate, and then you weigh the whole thing and you pay accordingly. This means they consider plain white rice costs as much as cooked meat. You have to guess: Whether it’s very good imported rice, whether you’re eating very cheap meat.