For the best views of Cannes right on the Croisette and opposite Palais Des Festivals, Hotel Barriere Le Majestic is where to stay. As it's only a 2min walk from Palais des Festival, during Cannes Film Festival this is where most of the guests (including actors and celebrities) stay.
Where to have lunch?
During the Festival Nikki Beach hosts a fun pop-up beach restaurant and club at the Intercontinental Carlton Hotel beach - come here for lunch and lay on the Jetty for the day before evening activities. If you have a bit of time, take the speed boat shuttle from Port Canto that will take you to the best place on the Riviera - La Guerite - a beach restaurant and club on Ile Saint Marguerite, about 15min boat ride from Cannes. It is the place to be.
How to get around?
The riviera is always busy and traffic gets jammed - especially around the festival period. Easy access to and from the airport? By UBERCopter of course. Nothing beats a 7min airport commute.
Where to Eat?
There are tons of cool restaurants in Cannes - La Petite Maison inside the Majestic serves excellent Italian food with great live entertainment during dinner, Baoli is the place dine for sushi followed by hours on the dance floor. For something more casual head down to La Californie on Square Mérimée.