Which parts did you find to be cleverly written? I haven't read it in awhile, but I still remember some of the gems of logic from it:
* The aforementioned "why would Nara Capazellil have said she heard a scream if it didn't happen, so that proves it's true"
* "the police have no motive to lie or present a certain version of the story", so any contention that their points might be wrong should be dismissed
* "it is possible, therefore probable, that Raffaele wanted Amanda to be safe walking around Perugia, so he gave her the large kitchen knife and she carried it around in her handbag". There was zero evidence of any kind that this happened, Massei completely made it up.
* The "they smoked pot, so it is likely they took harder drugs, got violent, and had group, violent sex, with someone they barely knew, and killed Meredith"
* The, Rudy Guede would not have broken into the upstairs flat, because he had met Amanda and Meredith once, so he "had a good relationship of friendship and fun" with them.
These are just a few. When I finished that report, knowing little about the case, I thought, "REALLY???"
The above quotes are not exact, just paraphrases of the ideas that I remember.
I think anyone reading this report critically would not accept such contentions as the ones listed above, especially because Massei used these, and others equally as specious, to add up to the guilty verdict.