Hotwire search for Frankfurt 5* Hotels (City Center-Romerberg) led me to getting The Westin Grand Frankfurt for one night, at $102 ($118.41 with tax.) Hotel amenenties listed are: Indoor pool, Fitness Center, Restaurants, Business Center, Laundry Facilities (Self-Service), High-Speed Internet Access, In-room Accessibility, Handicapped Parking, Accessible path of travel. I'm only in Frankfurt for a one night layover, but am happy with this hotel win!