Having looked at old Holiday Inns...now from highwayhost.org the former Howard Johnson locations:

Hotel/Restaurant:

45945 Willow Run Expressway, Belleville [[demolished, replaced by Comfort Inn)
Washington and Michigan, Downtown [[now Holiday Inn Express)
West Grand and 3rd Avenue [[demolished)
25100 Northwestern Expressway, Southfield [[demolished, replaced by Holiday Inn Express)

Restaurant only:

Van Dyke & Sterling, Center Line [[now Haney's Family Restaurant)
7033 E. Jefferson [[now Big Boy)
1620 N. Telegraph, Dearborn [[now Fifth Third Bank)
26767 Grand River Avenue, Redford [[demolished, now Soft Touch Auto Wash)
12132 Woodward, Highland Park [[demolished, parking lot)
1111 14 Mile, Madison Heights [[demolished, to become a Twin Peaks)
3650 Dixie Highway, Waterford/Pontiac [[now office rental space)
20460 Mack, Grosse Pointe Woods [[demolished, site of CVS Pharmacy)
36685 Plymouth Road, Livonia [[now Midtown Grill & Bar)
37040 Gratiot Avenue, Mount Clemens [[demolished)
13400 W. Eight Mile, Oak Park [[now Patsy's Family Restaurant)
3375 N. Woodward, Royal Park [[demolished, now Walgreens)
4875 E. Eight Mile, Warren [[demolished, now McDonald's)
6450 Telegraph Road, Bloomfield Hills [[now Hogan's)
25050 Northwestern Highway, Southfield [[now Kerby's Koney Island)