Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Teresina (67% of total searches to Piauí). The next most popular destinations are Cajueiro da Praia (17%) and Ilha Grande (11%). Searches for hotels in Parnaíba (6%) are also popular.
KAYAK users have found double rooms in Piauí for as cheap as £8 (Parnaíba) in the last 3 days. The average price is £57.