Considering the Novotel Arcachon in Arcachon?
A VT member wrote the following comment about visiting Arcachon:
Ile aux Oiseaux by bijo69
You definitely have to take a boat tour in the bassin around the Ile aux Oiseaux (island of birds). You'll get to see the oysterfarms in front of the islands with their picturesque cabanes tchanquées (cabins on stilts) which were built for the guardians of the farms.
The size of the island which is home too many native and migratory birds varies between 300 and 1000 hectar depending on the tide. So you can imagine that the difference between low and high tide is quite large in the bassin, between 3 and 5m.
The trip I took also went along the Northern shore of the Bassin until Cap Ferret. It lasted 1h45min and the ticket was 13,50EUR.