You have the possibility to show your availability per room of your B&B on your own website. To do so, paste the HTML code in your website.
You'll find the code in the client area of your advert. Go to "Rooms" and then "Availability". On the bottom of the page you will see the button "show embed code". You can copy this code and paste it in your own website.
It looks like this:
<iframe frameborder='0' scrolling='no' src='https://www.gites.nl/rentals/xxxx/rooms/xxxxx/embed' style='max-width: 760px; width: 100%; height: 340px;'></iframe>