Home to Iridescence, the only AAA 4-Diamond Award-Winning restaurant in. Sixteen floors above the bustle of the MotorCity Casino Hotel gaming floor stands the city's only AAA-rated Four-Diamond restaurant. Experience the best casual and fine dining Detroit restaurants all under one roof. Considered to have one of the best views in the city, Iridescence at the top of MotorCity Casino Hotel is no longer a fine dining restaurant. . The high ceilings set it apart from every other dining destination in the city. One: The restaurant itself is stunning. It adjoins MotorCity Casino. Featuring spectacular views of the city skyline, Iridescence is Detroit's premier fine dining experience and has been awarded AAA's 4-Diamond rating year. motor city casino restaurants. The. MotorCity Casino Hotel is a Detroit luxury hotel, conference, banquet hall and hotel meeting concept built from the ground up. Iridescence combines perfectly executed dishes with stunning ambience from the 16th floor of Motor City Casino in Detroit, MI. Drop dead gorgeous.