I covered this briefly in my article of FS Biarritz - http://www.headforpoints.com/2016/05...ays-wifi-gogo/

It is now the Canary Riverside Plaza Hotel.

On the face of it, it may be surprising that the hotel is unbranded after FS ceased management. However, I know that Four Season management contracts are incredibly tight and often include a clause which stops a hotel operating under another brand for a number of years if FS is forced out. We saw this in Provence a few years ago where the ex-FS is still not rebranded - http://en.terre-blanche.com/