The difference lies in the degree of help you get. If you ask a merchant for a place to stay, a fair result would get you the directions to the nearest inn, a good result would get you directions to the nearest GOOD inn, and an excellent result would get you a personal introduction to the innkeeper or (depending on culture) an invite to stay with the merchant and his family.
Originally Posted by el_octogono
"A hidden corridor! Fortunately it was labeled!" -- Sadie Doyle, "Beyond Belief: Sarcophagus Now", The Thrilling Adventure Hour