Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Londrina (33% of total searches to Paraná). The next most popular destinations are Curitiba (33%) and Foz do Iguaçu (33%).
KAYAK users have found double rooms in Paraná for as cheap as S$ 13 (Londrina) in the last 3 days. The average price is S$ 103.