Ballroom/Party/Meeting Rooms go Results Found: 3 Button group with nested dropdown South Sioux City Marriott Riverfront 385 E. 4th St. South Sioux City NE 68776 (402) 494-4000 Hilton Garden Inn Sioux City Riverfront 1132 Larsen Park Road Sioux City IA 51103 (712) 255-4200 Cottonwood Inn and Conference Center 4402 Dakota Ave. South Sioux City NE 68776 (402) 494-4114