If you are an obsessive fan of Death In Venice (is there any other kind?) and the enigmatic Tadzio, for whatever reason, I know nothing I can write will dissuade you from watching this documentary. There are a few interesting "behind the scene" clips and a bit of commentary from the original casting director which amount to about ten minutes of screen time. There is also about a minute or so of Andresen returning to Venice and what appears to be the ruins of the hotel where the film was shot. So just be aware that's it for DIV content.
In general, this documentary is more a contemplation on a life that had some early, brief notoriety; its fair share of tragedy; and perhaps never lived up to its potential for whatever reason. No doubt there are many similar life stories, we all just happened to be in on the beginning of this one.
What was interesting for me to consider was how I, after seeing this movie as a young girl, projected the character of Tadzio onto the actor, and I think on some level expected that he might have lived out some Tadzio-like existence when obviously, he was just a kid doing as he was told. As an aside, I will say that the actual boy who inspired the Tadzio character seems to have led a fascinating life truly worthy of a book or movie -- but then, the "real" Tadzio was not as beautiful or mysterious as the cinematic one. And he was a very young boy, which takes the story from problematic straight to nauseating. Anyway, I digress . . .
Perhaps the unintended takeaway here is the human obsession with youth and beauty, and how in a way we can all be creepy Von Aschenbachs preying on those who possess it, and expecting answers to questions we have no business asking.