Overnight stops in Northern Spain

Jackieanddavid

We are travelling to the French Pyrenees at the end of August via the ferry to Santander. Does anyone have any suggestions for an overnight stop near to the motorway between Bilbao and San Sebastian that we can book? We have e-mailed several sites but they won't book for stays of less than a week. Any information would be appreciated.

Many thanks Jackie and David.