Not specific to downtown, but near Belle Isle all on Jefferson less than 5 min - you also have Rose's Fine Foods, Legends, IHOP and Belle Isle which all have good breakfast. Legends Grill is actually my favorite Detroit greasy spoon. Eggs, sausage, hash, toast for $6.00.

New Center Eatery in New Center is hands down best breakfast in Detroit. Chicken N Waffles.