I checked the Urban Dictionary for the word "dapper" and it said it is used as "a compliment made to someone who looks incredibly smart, sexy and stylish." It would seem that in your dream he gets things done. Maybe you are not attracted to this type of character and that is why your dream seem to show him in a negative manner. You used several negative adjectives you used to describe him such as, "officious," "crummy," "nasty" words, or even using the word "sniggering" instead of the correct word, "snickering." The former word was used in the 1600's and was used to describe "fishing for eels." That I found in my Merriam-Webster's Dictionary. All in all, it seems to me that your taste in men is quite different from this hotel clerk, who just doesn't make the cut!