Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Paris (99% of total searches to Ile-de-France). The next most popular destinations are Roissy-en-France (1%) and Chessy (0%). Searches for hotels in Tremblay-en-France (0%) are also popular.
KAYAK users have found double rooms in Ile-de-France for as cheap as $37 (Paris) in the last 3 days. The average price is $412.
In the last 72 hours, users have found Ile-de-France hotels for tonight for as low as $50 (Paris). Users have also found 3-star hotels from $79 (Paris) and 4-star+ hotels from $154 (Rueil-Malmaison).