Ratings

Just received feedback from a recent guest

he gave 10/10 in all categories but it shows 9/10 overall ?????

Could someone explain why, as I thought the overall score was an average. Especially as I went the extra mile for him to drop of luggage 6 hrs early, and to leave his luggage here for an additional 8 hrs after check out.

Is this a case of no good deed goes unpunished