Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Foz do Iguaçu (56% of total searches to Paraná). The next most popular destinations are Curitiba (38%) and Londrina (3%). Searches for hotels in Apucarana (3%) are also popular.
KAYAK users have found double rooms in Paraná for as cheap as $15 (Londrina) in the last 3 days. The average price is $130.