I first saw this as part of a school film study in 1960. THEN as I recall, I merely saw a creaky old French travelogue highlighting more or less a day in the life of a town on the French Cote D'Azur that bore less relevance, to ME at least, than the rather staid and somewhat uninspiring biscuits named after it!
I saw A PROPOS DE NICE again some forty years later at a lowly patronised French Film Festival which had been hurridly organised apparently by Sydney University. What I saw THAT night, with the advantage of four decades of life's experiences, was a superbly constructed attack on, or should I say "de-construction" OF - the Bourgois. Vigo, himself an anarchist to his left femur, relentlessly piles on the satire with images of the "respected" upper-class acting anything but respectfully.
Innovative indeed was the cinematography from Boris Kaufman with intentionally tilted aspects of buildings to lessen their grandeur, use of shadow and striking images of the people (love the Brit tourists nursing their fish and chips) as they go about their daily business.
Essential viewing for students of early French cinema.