Nicole was very helpful and the apartment is in the most perfect location.
We went with another couple and we didn't feel like it was too small, it has a lovely big coffee table for playing cards in the evening :)
The beaches close by are absolutely beautiful too.
You should note that you have to pay parking by the hour unless you go to the big underground car parks- they do have a weekly pass for around 70Euros which works out much cheaper than parking on the street.
I would definitely recommend learning some French if you go to Biarritz, not many people speak English - we were able to learn quite quickly which was good.