I stayed 4 days at the apartment. The check in process was bumpy. The post talks about paying a deposit through a service that isn't Airbnb, and I am always suspicious of that based on Airbnb requiring everything to go through it's service. In the end, I tried to pay the deposit, but I couldn't get any of my American cards to be accepted. I was finally able to get the door code from the apartment manager after a lot of back and forth.
The apartment address is currently listed incorrectly. It's 7bis, not 7. The door to the apartment is down a little alley around the corner from the the main building. At 10pm, it was not easy to find. Once inside, the place is very nice. It's stark and simple, almost monastic. It's smaller than the pictures make it look, but it's nice.
It poured rain the whole time i was in Biarritz, which apparently is common. The apartment has large skylights and and the roof seems totally uninsulated. The sound of the rain and wind on the roof was so loud that unfortunately it kept me awake at night. Of course, it's just bad luck that it rained the whole time, but I would say that the apartment would be nicer to stay in if the weather was warm and sunny. It's not a cozy place.
The bed was comfortable and the sheets, blankets, and pillows were also perfectly nice. The kitchen is pretty well appropriated, although I didn't cook anything more than an egg for breakfast. There was no hand soap in the kitchen or bathroom.
The apartment is ideally located a short walk to the old town. It's next to the covered marketplace with food and market stalls. It's wonderful! There are some very nice cafes, shops, and restaurants all around, and the beach is a very short walk. I loved the location. It was perfect!
All in all, it was a good stay, and I would recommend it.