The £850 a night Airbnb where the Prince and Princess of Wales stayed during their trip to Wales last year has shared an unseen image of the royal couple.

Taking to Facebook, Duffryn Mawr Country House, marked the one year anniversary of their royal couple’s stay with a photograph of William, 41, and Kate, 42, smiling with staff.

The post praised Kate and William as ‘so kind and friendly’, adding that it was a ‘pleasure’ to have them stay for the night.

The staycation hotspot, which sleeps 16 people, doubles as a wedding venue and borders the Brecon Beacons National Park, where Kate and William travelled to celebrate the 60th anniversary of Central Beacons Mountain Rescue.

It is open to members of the public on Airbnb for £850 per night with a three night stay minimum and boasts panoramic mountain views.

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Staff at Duffryn Mawr Country House shared an unseen image of the Prince and Princess of Wales one year on from their stay

After their stay, Kate and William smiled with staff for a photograph and signed the guestbook.

The Facebook page read: ‘It’s been one year since we welcomed William and Kate, the Prince and Princess of Wales, to Duffryn Mawr.

‘We were delighted to welcome William and Kate for a night here when they visited The Brecon Beacons. So kind and friendly, it was a pleasure to have them stay here.’

In addition to the seven bedrooms, the country home boasts 74 amenities, including a gym, a spa kitted out with a steam room and hot tub, and a children’s den.

Kate and William enjoyed one night at the luxury home, before cracking on with activities around south Wales, including meeting the Central Beacons Mountain Rescue Team as part of William’s role of patron of Mountain Rescue England and Wales.

At the time of their stay Kimberley Fry, who owns Duffryn Mawr and the Bluebell, said: ‘They walked in just like locals.

‘They had a reservation and we kept it quiet, but the locals in the pub were very surprised to see them. We felt very privileged to have them here. We charged the going rate, as we do for everyone.’

It comes after Buckingham Palace revealed it has been inundated with ‘tens of thousands’ of get well soon cards and gifts for the Princess of Wales, following her brave admission that she is undergoing cancer treatment.

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After their stay at the country home, Kate and William signed the Duffryn Mawr Country House guestbook

Taking to Facebook, staff at the Wales home praised Kate and William for being ‘so kind’ and ‘friendly’

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Located on the edge of Brecon Beacons National Park, the country home is priced at £850 per night on Airbnb

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Duffryn Mawr Country House can comfortably sleep 16 people and has panoramic views of the nearby mountains

It is understood that the correspondence team at the palace have been ‘so touched’ by the love and affection shown to Kate, 42, who recorded an emotional video message revealing she had embarked on a course of preventative chemotherapy.

The princess has withdrawn from public life to concentrate on her treatment and recovery, as well as protecting her young family.

But the outpouring of support for the princess continues- and palace staff have received thousands and thousands of cards, letters and gifts from members of the public offering their support and good-wishes.

The sheer volume of correspondence has at times been difficult for the team to cope with. But staff do aim to reply to all the writers, eventually.

Although the Prince and Princess of Wales have their own private office at Kensington Palace, all letters to members of the Royal Family are dealt with by the Court Post Office.

In a normal week the palace would expect to receive up to 1,000 letters each week from members of the public with various queries or messages of good wishes for individual royals.

But what they have experienced since the disclosure of the princess’s health issues has significantly superseded that.

Kate was unexpectedly taken into hospital at the start of the year for major abdominal surgery. She remained in The London Clinic for two weeks before going home to recuperate.

In March, following a period of intense global speculation about her health, the princess herself confirmed that while her condition had not been thought to be cancerous at the time, doctors had subsequently discovered evidence of the disease.

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In total, the luxury country home in south Wales boasts 72 amenities, including a pool table

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During their trip to Wales in April last year, Kate and William visited the Central Beacons Mountain Rescue team

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Kate appeared in high spirits as she celebrated the 60th anniversary of Central Beacons Mountain Rescue

She made it clear that she needed to focus on both her recovery but also supporting her young children at a difficult time, asking for her family to be given time and space while she completed her treatment.

Although there has been no official update on her health since, The Mail understands that the princess has been seen out and about more with her family in recent weeks, which will be taken as a positive sign by many.

However earlier this week Kensington Palace stressed that she very much still needs time and space to recover.

Speaking at the launch of a landmark report by her early years ‘business taskforce’, a Kensington Palace spokesman stressed that the news should not be viewed as her returning to work.

A senior royal aide added: ‘The Princess of Wales was the driving force behind the business task force. She has been kept up to date since the inception of the task force and she has read the report and been briefed on it.

‘This is a clear commitment she has made that throughout her life of public service that this will be focus. That will continue when she returns to work.

‘But we have been really clear that she needs the space and the privacy to recover right now. She will return to work when she has had the green light from doctors.’