Considering the Ibis Arcachon La Teste in Arcachon?
A VT member wrote the following comment about visiting Arcachon:
Port of Arcachon by bijo69
The fishing port and the marina (second in size on the French Atlantic Coast) are located in the Ville d'Automne, about a 15 minute walk along the beach from the centre.
Here you can hire sailing boats, take sailing classes or book fishing trips.