Céline's place is great! Its exactly what's in the picture. Clean and well equipped. It's very well kept and the location is close to the beach too. It's also walking distance to some great restaurants by the beach. Our favorite is the kebab shop nearby. Pharmacy and Carrefour is within walking distance too.
The house is located in an amazing neighborhood. We have view of the beach and the golf course. Morning walks around the neighborhood is just wonderful.
However, if you plan to go surfing at the beach in Biarritz, it might be a little bit far. You will either need to have your own car to get around or rely on the public transportation (there are public buses going to Biarritz and the bus station is just a max 8 mins walk from the house). What we did during our stay is we rented bycicles from a shop in Biarritz to get around. It's convenient and doesn't cost that much; it's a great workout too due to all the uphill in the area.
Overall, the place is great and thanks a lot to Celine for being a great host:)