While in Brazil, be sure to explore the Federal State of Piaui. Search for special offers from over 92 hotels on Agoda.com. Home to 7 cities, you will never run out of things to do and places to see in this wonderful and exciting Federal State. The Federal State receives many visitors due to its unique and interesting features. With more than 2 million customer reviews, more travelers are choosing Agoda.com to book hotels in Piaui.