Staybridge Suites Ofallon Chesterfield by IHG in O'Fallon offers spacious suites with kitchens, free breakfast, and evening socials. Welcome to Staybridge Suites - O'Fallon/Chesterfield. Featuring apartment-style suites ideal for vacationing families and those in town for business. Staybridge Suites ® O'Fallon MO hotel is designed for the discerning traveler.