The food is top notch and the atmosphere is indeed...

The food is top notch and the atmosphere is indeed like a market place. Restaurants selected by Time Out line up the all four sides of the building so you'll have plenty of menus to choose from, from Portuguese to Chinese. The salmon and cuttlefish hamburger and fish and chips were both delicious.
However, if you're tired of fellow tourists or if you're looking for more down-to-earth places that serves traditional Portuguese food, I'd say skip this place.