The flat is really wonderful and newly decorated with a lot of attention to detail. It is in walking distance to the Cote de Basque beach and to the city center. There are also shops and delicious bakeries close by.
If you arrive by car, you can find a parking lot easily in this neighbor hood - at least in October.
The flat is well equipped with a dish washer, a washing machine (including dryer) and even with a hair dryer, a microwave and two induction cooking plates. The kitchen is fully equipped for four persons.
You can stay there with four people - there are enough resources - but it is a one room appartment and I would recommend to only stay there with three people, if you want to stay longer than just a weekend.