Looking at their website, it seems a nice place to stay. Reality is different.
Do not be misled by the picture of the swimming pool ... in reality it is just a bath tub .. Furthermore their is no time to relax next to the 'bath tub' after a day of hiking/biking as it is always hectic and full of private invited people .. Imagine you would have the room giving way to this terrace.
One day i even stepped in a dog crap coming back from breakfast passing the terrace. The owners dog apparently get up earlier that day.
Our room -ocean view- had a separate entrance which is OK. But it is at 0.5 meter of a busy path giving way to private owned gardens.
And the owners are not really made to be B&B hosts in my opinion.
Just a pity as Biarritz, the region and surrounding cities/villages are worth a stay.