That'll be the Folly Inn by Folly Bridge. We stopped there a year ago - a cold autumn evening - the fire was good and the beer acceptable but the food was disappointing. It may just have been that it was a quiet mid-week night because I have heard others praise the food.
The Napton Bridge Inn by Napton Bridge has been converted from a pub that did food to a restaurant with a bar (no saloon, public or snug here) and would not need the exacting standards of traditionalists such as Maffi. However, the food is very, very good.
I went to the Folly Inn during June, and found the food to be great. May be you just had a bad night? Its a nice atmosphere too. When I was there, a group of boaters were gathered in the bar singing along to folk tunes, accopmanied by a guitarist.
I think if you are planning on mooring outside, you need to be there early?