Inside the luxurious hotel where William and Kate are holidaying

Prince William and the Duchess of Cambridge, née Kate Middleton, have no official engagements until he end of August, so the couple whisked their two young children, Prince George and Princess Charlotte, off to France. While few details of their private getaway have been revealed, French newspaper Sud Ouest has gathered a few tidbits about one of the hotels used by the family of four.

TAP TO VIEW GALLERYWilliam, Kate and their children are enjoying a family holiday in France

According to the newspaper, the royals "spent a night" – potentially longer – at the Hotel du Palais in Biarritz, where a basic room costs £422 a night (or $735). The five-star establishment was famously used as Emperor Napoleon II's summer palace, where he would vacation with his wife, Eugenie de Montijo, and on the website it is described as "neither passé or pompous but profoundly elegant".

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The hotel features a spa with an outdoor swimming pool, sauna, solarium and Turkish bath to keep guests relaxed, plus two restaurants run by Michelin starred chef Jean-Marie Gautier.

The Cambridges are understood to have stayed at the Hotel de Palais in Biarritz

It's unclear which type of room William, Kate and their children stayed in, but the hotel's Imperial Suite costs £3,304 ($5,765) for bed and breakfast in the month of August.

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The Cambridges flew into France on July 26, touching down at the south-western airport of Pau-Pyrenees on board an £8million Cessna private plane owned by their family friend, the Duke of Westminster. It is thought that they are spending the majority of their holiday visiting friends and relatives.

Rooms at the five-star seafront hotel range between $735 and $5,765

France has always been a popular holiday destination for William and Kate. They enjoyed their very first holiday as a family of four in the French Alps in March of this year, again using the Duke's private jet to make the short haul flight.

In just a few weeks, the Cambridges will travel much further afield as they head to Canada for an official overseas tour. It is believed that William and Kate will bring George and Charlotte along with them on the visit, marking their first official tour abroad as a family-of-four.

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