Located close to The Sioux City Lewis and Clark Interpretive Center and Sioux City Art Center, South Sioux City Marriott Riverfront provides a free roundtrip airport shuttle, a free manager's reception, and a terrace. The on-site American cuisine restaurant, Kahills, offers breakfast, brunch, lunch, dinner, and happy hour. Free in-room WiFi, with speed of 100+ Mbps (good for 1–2 people or up to 6 devices), is available to all guests, along with a coffee shop/cafe and dry cleaning/laundry services.