Exit at Ohio Street, a one way street heading east. Exit the train at the Washington Street Station. Try a private bus or taxi. The Cass Hotel is two streets north and one street east. They will provide a van or bus that will drop you off at the hotel.
Discounts are available for round trip ticket purchase.
It has a telephone attached an will allow you to obtain prices and availability for a private car ride to the hotel. This cost may increase per person and at peak travel times when roadways are congested. Exit at Ohio Street, a one way street heading east. At the baggage claim area, take the subway train to downtown Chicago. Purchase a transfer.