Welcome to Staybridge Suites - O'Fallon/Chesterfield. Conveniently located at Hwy K and I-64/Hwy 40 in O'Fallon, MO we are just minutes away from Citigroup, MasterCard, APC, NISC, the Missouri Research Park and the businesses in WingHaven. We are also near Missouri Wine Country and the Ameristar Casino, downtown St Louis, Home of the St Louis Cardinals, the St Louis Rams, the St Louis Arch and...