Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Paris (97% of total searches to Ile-de-France). The next most popular destinations are Évry (1%) and Versailles (1%). Searches for hotels in Roissy-en-France (1%) are also popular.
KAYAK users have found double rooms in Ile-de-France for as cheap as $44 (Paris) in the last 3 days. The average price is $509.