What to say... I came here as a kid and i bring my son here too.
A wonderful place for kids :) there is not a big beach.... instead just a small pier but the bottom is soft sand, pretty much shallow (knees to mid thighs of the 186 cm man, depending on the tide) and usually warmer by a couple degrees than surrounding places in the riviera.
I say usually because there are mountains around and just after the rains you can encounter sudden cold spots. Fret not, those are just mini fresh water springs, the whole area is known to have them... actually, close by just few meters in front of the chapel which is about 20 meters away, there is a small fresh water spring which is pretty much constant but does not affect this beach so much...
Anyhow, good place to take your kids. Parking can be difficult though