Looking for an authentic, immersive experience in Cannes for the Cannes Lions International Festival of Creativity? Try a cozy one-bedroom facing the Palais des Festivals, listed on Airbnb for $350 a night. If you're low on cash, a charming villa with park views can put you up for a mere $40 a night. As the festival plays host to more than 13,000 attendees and hotels fill up, Airbnb is picking up the slack with accommodations ranging from a pull-out couch for a few dollars to a luxury mansion for $10,000 a night.