Bellevue is a good 2 star hotel, central to town and beach. The bedroom was a good size and the bed was king size. Wifi in the rooms with code from reception.
I recommend the breakfast - buffet style, continental and cold meats and cheese - no eggs though.
There is a car park very near by, that works out at about 14 euros for 24 hours parking. You don't really need a car in Biarritz. The next time I go, I'll either take the train or plane!