Disabled plugin CSS.
add_filter( 'woocommerce_hbfwc_disabled_frontend_css', '__return_true' );
Extends the amenities group.
add_filter( 'hbfwc_get_amenities_group', function( $groups ) {
// New groups.
$new_groups = [
'hotel_facilities' => __( 'Hotel Facilities', 'text-domain' )
];
$groups = $groups + $new_groups
return $groups;
}, 10, 1 );