Mostly veggie buffet (fish and chicken selections are clearly labeled on the side); you pay a flat fee for all-you-can eat. Almost as good as Greenlife, which is also in Curitiba. This place is definitely worth checking out. There is yet another vegetarian buffet down the street for Greenland, called "Espace Verde" (for some reason not listed on Happy Cow). These vegetarian lunch buffets have great value; but for dinner in Curitiba, prepare to starve--the buffets are for lunch only.
Cons: some non-veggie dishes, open for lunch only