Forget about any shady Asian salons around these parts. All the erotic massage action in Cannes happens either in hotels or luxurious studios. Everyone counts on extra tips and additional services are often possible. There are some options if massage is unavailable in your hotel. Majestic Massage (https://majesticmassage.eu/) at 23 Rue Hoche is just a short walk from the promenade.
Luxeva (https://luxeva-nice-cannes.fr/) at 23 Rue d'Antibes is an impressive salon offering massage érotique and massage naturiste in Cannes. Super-hot girls, showers, and Jacuzzis are their trademarks. Expect to pay around €200 for an hour of steamy rubs.