I had a problem with the Howard Johnson - Detroit Metro Airport and the shuttle bus service they use for their Lodge, Park & Fly package. The shuttle bus company, Hotel Connection, Inc., made off with a piece of my luggage and both it and the motel were unresponsive to my complaints, made by phone and certified mail.
So I complained to the parent company, Howard Johnson Internaional, Inc. A Ms. Tara Efraimson in Customer Care merely referred me back to the unresponsive local motel because "Each Howard Johnson facility is independently owned and operated by licensees." So traveller beware: HoJo's doesn't stand behind their product despite the fancy sign out front.
Their brand name seemingly means nothing to them. And as for any Detroit Metro Airport motel that uses the Hotel Connection shuttle service, my advice is to stay somewhere else and use a cab instead.