Sorry, you can't meet me at the fair; your name isn't Louie. ;^)

Seriously, though, here are some sites.

A Missouri state site with regional, county and city links: http://www.wowworks.com/wowcity/mo.htm

An official St. Louis site: http://stlouis.missouri.org/
Look at the "Visitor Information" page on this site; it includes "Must-See Attractions" as well as "Accommodations". Now if you're trying to find a folk club there, the site may not help you! (What sort of "good time" were you looking for?)

BTW, I see on the site that there's a blues festival in St. Louis tomorrow and Saturday (Sept. 1 and 2), with free admission!