ATRIUM PLAZA HOTEL AND CONFERENCE CENTER. Accommodations/Features *101 Rooms *Jacuzzi Rooms *Indoor Pool *Hot Tub * Exercise Room *Game Room *High-Speed Internet Access *Guest Laundry *Restaurant *Meeting and Banquet Rooms * Just minutes from Michigans largest inland lake, the Atrium Plaza Hotel and Conference Center is easily accessible from US Highway 127 at M-55.