We really enjoyed our stay at Elisa's place. The room and bathroom are completely private and separate from her space. The bed was very comfortable. There are two different bus stops close by that take you into town. There are also two Boulangeries nearby for breakfast.
Elisa and her partner were very kind and accommodating- taking us to and from the airport and providing some snacks and drinks in the fridge. Overall, it is well worth the price and creates a nice home base to explore Biarritz!