I just spent a few days in St. Louis. The Renaissance Grand hotel was beautiful, the bar is a great gathering place, we had a last minute change to our conference and had to cancel a riverboat cruise due to flooding, and the hotel put together a great dinner in one of their ballrooms for us in less than 24 hours. The food was fantastic! An American Place also held a reception for us, and even though there was construciton in the bar area, it was still nice. If you are looking for a special place to eat, try Kemoll's. Great view of the arch and romantic ambiance.