Would you kindly explain where the hotel is situated.
I know Cannes very well.
I usually take the rapide bus from nice airport.
The hotel is located 5 mn walk from the bus station (and train station), Boulevard d'Alsace is a parallel to rue d'Antibes, behind the busy road.
The hotel is on a busy road (Blvd d'Alsace) one block from the train station. It runs parallel to rue d'Antibes and is literally a 2 minute walk from the action and 5 minutes from the beach. We attended the convention center and found it a comfortable walk. It is way cheaper than the beachfront hotels and way quieter than the central hotels but it's nice to get away from the madness! Highly recommend.
Get an answer from Cezanne Hotel staff and past guests.