We are a big family with 4 kids and we found this hotel with a family room. All beds in the same area, but ok.
The place is not high quality standards but for the price you are paying, you are getting a fair service.
It's very close to the border between Spain and France, but especially very close to St. Jean de Luz. So if you want to enjoy the city this might be a good cheap option because it's easy to get there by car.