The smoke-free Sleep Inn hotel in OFallon, IL will give you a simply stylish experience. We are close to attractions like downtown St. Louis, Busch Stadium, Edward Jones Dome, GCS Ballpark and the St. Clair Square Mall. Enjoy free breakfast, free WiFi and an indoor heated pool. Your guest room offers warm, modern designs, and includes TVs, refrigerators, microwaves, coffee makers, hair dryers, irons and ironing boards. Upper-tier suites have even more amenities, such as sofa sleepers and a hot tubs. We also offer membership to the Choice Privileges Program, which gives members the opportunity to earn valuable rewards points toward airline miles, gift cards and free hotel room nights.