Sachsenheim Hall is glorious. Tankards of quality beer are available just above (and occasionally below!) retail. Enormous quantities of pretty good and very cheap house made food flow like wine. You never know what sort of crowd might be in the bar, but there's a good chance you'll hear some German "um-paw-paw" music from upstairs, run into a singer-songwriter's club, or a bunch of loud beer SNOBS.
You don't even have to use your imagination to see someone wearing lederhosen if you go at the right times! Their outside area is swell in warm weather, with some seriously nice old trees.