Sonesta Simply Suites St Louis Earth City is located in Earth City, 3.3 miles from Hollywood Casino St. Louis and 21 miles from St. Louis Gateway Arch. This 3-star hotel offers a shared lounge, a 24-hour front desk and free WiFi. Private parking is available on site. Six Flags St. Louis is 30 miles from the hotel, while St. Louis Zoo is 17 miles from the property. St. Louis Lambert International Airport is 7.5 miles away.