Hi Kirsten,
I was in Le Marin 3 weeks in February ....
In Ste Anne there was a new to me (but I haven't been there for a while) small 'restaurant' directly at the cliff ('between the cemetery and 'downtown' Ste Anne), very good
food (salads, home-made juice, ...)
In Le Marin behind the 'old harbour' (Boulevard Allegre, close to the Jumbo Car business) there is a small restaurant upstairs that offers awesome spare-ribs (rest of the food is also nice) for at least the last 30 years ;-)
The bakery behind the new marina has great croissants and baguettes ...
My recommendations regarding food if you are in Le Marin ...
Safe sailings,
Carsten