Cofman.com has this great search filter for finding available summer houses.

Instead of making people fill out a lot of search criteria, click the ‘GO!’ button and then have the result: we don’t have anything meeting your search criteria. Cofman give the user an instant response “{0} meets all your requirements”. But Cofman doesn’t stop here, they also provide another result “{1} houses meets nearly all your requirements” giving the user with a lot of preferences a second chance to find a house.

See it for yourself. Watch the video or go the cofman.com homepage.