I would recommend La Baule to you in Brittany. About 3, 5 hours from Paris on a fast and comfortable train, without transfers. Which is very convenient. The cost of railway. ticket to one side of the order of 60 EUR per person.

The stunning beauty of the bay, the length of the beach is about 9 km. Beach sand and wide. Very beautiful and well-groomed embankment. There are special paths for cycling. And in addition to all this splendor - silence, pine trees, clean air and horseback riding right on the ocean shore. If we talk about infrastructure, then in the summer on the beach put special children's playgrounds. There is a market and supermarkets in the city.

The only thing that must always be considered when resting on the Atlantic is the water temperature. At air temperature, for example, in August, + 28-30 ° C, the water temperature is + 20-21 ° C. Because the ocean.

Also La Baule - one of the most famous centers of thalassotherapy. So you can take an adult and pay attention to yourself. Or you can go and see the famous Abbey of Mont-Saint-Michel, which is located about 200 km from La Baule. Despite a decent distance, the trip is worth it. But the main trump cards of La Baule are nature, air, silence, beaches and a bay of stunning beauty.

If we consider the alternative of La Bol, a second option, then we can consider La Rochelle / La Rochelle. The resort is located on the shore of the Bay of Biscay in the Poitou-Charentes region. The train from Paris takes about 3 hours.

And the air and the ocean are warmer here than in the north. Beaches are sandy, wide. Only 3 beaches: Chef de Baie, La Concurrence, Les Minimes. La Concurrence is located in the city center. Many yachts, boats (the same port). But, in my opinion, the beach and the bay of La Bolla are better. In La Baule, the bay and the beaches are generally a picture.

La Rochelle is a port city with its own history. The old port, the house of Henry II, places associated with the adventures of the Musketeers, the city gates and very beautiful streets.

Next to La Rochelle is the famous Fort Bayard. Necessarily need to go to the famous Aquarium of La Rochelle: 2 floors, 12 thousand marine animals. There are sharks. In the Aquarium, of course :). It is also possible to make a trip from La Rochelle to Futuroscope Park, children will be very interesting there.

If you take the other most famous French resorts of the Atlantic, then, of course, you can say more about Deauville, Biarritz, Arcachon, Saint Malo. Everyone has their pros and cons concerning your request. If it's interesting, I can tell you about each.

But the best option for you is La Baule. As the second option - La Rochelle.

And if the water temperature for you does not seem low, then the Cote d'Azur is waiting for you. And I would recommend in this case a holiday in Antibes - Juan-les-Pins. There are sand and pine trees, and next to the famous Marineland Park, and a convenient link to the airport of Nice (Antibes from Nice very close). And children can also be taken to the Oceanic Museum in Monaco, take a walk to the Lerin Islands and learn the secret of the famous Iron Mask. You can also go to Eze, in San Pol de Vence, visit Grasse and the famous Fragonard perfume factory.