If you need to display rooms of one or more taxonomies, first go to Dashboard > Rooms > Categories and create some categories. Now, go to Dashboard > Rooms and assign some rooms to taxonomies.
Next, edit the page you need to display the rooms and on Page Builder add a new Rooms Grid element. On Grid Settings, on Data select FILTER ROOMS BY SPECIFIC TERMS and, in the field enter the taxonomy (or taxonomies) of which rooms you need to display.
Save changes and update page.
VALID FOR ALL VERSIONS OF HOTEL XENIA