We stayed for a week here in August with our little baby. Communication was fast and overall we really enjoyed our stay. You can be at the beach in a few minutes and when you step out of the door there are a ton of bars and restaurants and you can easily walk anywhere in Biarritz where you want to be. Only downside is the parking situation, as there is no free parking available in the area and it took quite an effort to find a parking space close by.