Grand Anse
The setting of this beach is just breathtaking.
White sand beach, turqouise water, granit boulders - like on a postcard
To get there, you have to cycle over a small mountain. But it's doable (and even pushing, it's not even 10 minutes uphill). From November to April, the wind comes from the other side of the island and you can usually swim there. (Can vary from day to day, of course. The power of the waves should not be underestimated).
In the months of May to October, swimming there can be life-threatening due to extreme surf with high unpredictable waves and sometimes undercurrents!
There is shade only from about 2 p.m. onwards.
For the small hunger in between, there is a restaurant "Lanbousir Coco" which mainly offers buffet.
Sunday afternoon you can find lot of locals enjoying the beach