The ‘town’ beach is La Gravette, near the yacht marina through the arch of the Ramparts and to the right. It is a pleasant little protected beach, good for families with kids. It has freshwater showers on the beach and a couple of snack bars and public toilets.
La Ponteil beach is a short walk in the opposite direction, to the west, also a free beach apart from the Royal private beach where you pay for a sun lounger and umbrella for the day and can book a nice lunch, http://www.hotelroyal-antibes.com/en/royal-beach.
Further to the west you come to Salis Beach. Make for Chez Josy, a food stand which sells the best freshly made pan bagnats (basically a Salad Nicoise in a bun bathed in olive oil). There is some parking along the street and a public parking lot behind the beach. Parking is free from September 16 to June 14. The beach is also at a bus stop for the No 14 bus that connects the coast with the Antibes train station.
The chic beach of La Garoupe on Cap d’Antibes is dominated by the renowned private beach Plage Keller and its restaurant Le Cesar, https://www.restaurant-plage-cesar-antibes.fr/ . More affordable restaurants are La Joliette and Le Rocher and there lies a public beach where lounge chairs and umbrellas are for rent from mid-June through September. A free portion is reserved for those who simply wish to sprawl out on their own towel. By bus, take line 2 which runs from Antibes.
For a change, walk over to Juan-les-Pins and choose from one of the many private beaches there for the day (in high season it’s advisable to book in advance). More of a party atmosphere. The Yolo is a nice choice http://yolo-plage.fr/crbst_2.html