Celina was SO helpful, we asked her for some no touristic spots to go, nice areas around Biarritz and nice and cozy restaurants and she sent us a super complete list with plenty of options.
The studio is small but very comfy and well decorated. Their daybed was surprisingly comfortable. In general, it had everything we needed.
The location is IDEAL. You can go walking to almost every interesting spot of Biarritz. They also have a small but useful carpark so you can forget of looking for carpark around the area as it seems to be very difficult!
Thanks for everything Celina!