The stay at Julie's apartment was short, but everything was flawless! The place is clean, well decorated and fully equipped for a comfortable stay. Wifi works great, and the best was that it's at a very charming neighborhood extremely close to the bus stop (about 100 m, we came from San Sebastian). There's free transportation to the more touristic parts of biarritz but it's quite easy to just walk (10 min at most).
Stay was great, thank you, Julie!