Correct PHP to output a single result of a Function with SQL Query

Solved it! Amazing what a good nights sleep does!

Function:

function get_all_rating_criteria_travel6(){
global $wpdb;
$rating6 = $wpdb->get_var( 'SELECT RatingCriteriaText from ratingcriteria WHERE NicheID=1 AND StarRatingID=5;');
echo $rating6;
}

Code to display:

<?php get_all_rating_criteria_travel6(); ?>