If you're enjoying a quick stay in Biarritz, I would highly recommend Valery's apartment. It was incredibly close to everything we needed and the shower is an absolute blessing after a long day. The sofa bed may be a bit uncomfortable for taller people but this was sufficient for two nights. The apartment is compact but had everything we could possibly need. We parked in the indigo car park right beneath the building which was convenient. The apartment is also very soundproof so this is perfect if you're a light sleeper.