Hyatt Regency St. Louis Riverfront | Map 315 Chestnut Street, St. Louis, Missouri, USA 63102 About Hyatt Regency St. Louis Riverfront Fresh from a $63 million renovation, this St. Louis hotel is better than ever. Its Grand Ballroom offers 20,000 square feet of space and the Regency Ballroom offers an additional 16,800 square feet. The intimate Park View room offers 3,300 square feet of unique space with beautiful arched windows, elegant chandeliers and a view of the Gateway Arch. Their 18 conference rooms offer the utmost in style and flexibility.   Hyatt Regency St. Louis Riverfront offers a day valet rate of $15 per car. Also available is a self-parking rate of $5 per car, using the nearby Mansion House Garage, located on 4th Street just north of Pine, about a block away.   Host Hotel The Hyatt Regency St. Louis Riverfront also offers 910 guestrooms with views of the Gateway Arch or downtown St. Louis. Ask for the St. Louis Business Journal Women’s Conference rates. $99 Single or Double Occupancy $199 Junior Suites Reserve by December 31, 2009. Reservations are made by calling 800-233-1234.