A film about the making of a film. Hollywood loves itself, even when it's straining to keep its participants this side of insanity. Perhaps especially when it is so struggling.
I'm not a fan of Apocalypse Now to begin with, so this rather piled yeah-so-whattery on top of urgh-no-thank-you'ery.
Maybe it's because some, if not all of the "revelations" about how awful it all was, had already been documented over the years between 1979 and 1991 that this seemed to me to have nothing new to say. 1001 Movies makes a fair point that this film presents a paradox: Apocalypse Now could not have been brought to the screen and become a hugely respected piece of art without Coppola's "auteurial" vision; but so much awful stuff went on that was beyond his control that we can all see what a collaborative enterprise it is.
However, that one legitimate point does not make a great film.
I preferred Coppola's The Cotton Club, mostly because it had Fred Gwynne in it.