Jean Jacques and his wife were lovely and welcoming, and the house was very spacious, comfortable, and clean. The pool was a bit cold due to the bad weather, but we loved relaxing in the outside area.
The location is a bit confusing as there is another number 5 on the street - the correct house is specifically '5 TER' which GM does not recognise, but it is behind house number 5. But it is within walking distance to many convenience shops, restaurants and takeaways, as well as the beach a bit further away. It is easy to get a bus to the centre of Biarritz.
They very kindly provided a cot, high chair, and toys for our 1 yr old son (he loved the musical toy)! And as they live in the same building (attached by an interior door, but you have complete privacy) they are always close by to help. Jean Jacques came through to fix the heating for us when it didn't work at first. He also very kindly posted back a small item we forgot.
Our only issue was that we were a bit confused over the bedrooms (there is only 1 in the house, the other is in a separate building) which meant we had to share with our son which was unplanned. But that was our fault for not checking the listing thoroughly enough.
Overall we had a delightful stay, and would highly recommend staying here!