Located along the famed Chicago River and steps from the Magnificent Mile, The Royal Sonesta Chicago Downtown offers a variety of meeting and event spaces to suit your needs. With more than 16,000 square feet of flexible function space, The Royal Sonesta Chicago Downtown offers 18 meeting spaces ranging in size from 350 to 4,300 square feet. The Penthouse Ballroom, located on the 39th floor, boasts floor-to-ceiling windows with 360-degree views of Chicago and a stunning 1600 square foot outdoor terrace. Perched high above the bustling city below, the Penthouse is a perfect photo-op for your next gathering. Our modern venues can accommodate groups from 10 to 350 people. Book a private meeting room to strategize or bring the entire team together for a conference. There is never a 'bored' meeting when thoughtful amenities and attentive service are at your fingertips.