This has definitely been one of the more enjoyable of the Jojo novels so far, though I anticipate that finishing Over Heaven will be stiff competition for reasons I will likely cover in that review.
Jojo novels, as I have mentioned in my other reviews, are currently without an official English translation and my copy was sourced from fan-translation. This link specifically, if I recall correctly, for those in a similar position as me.
https://archive.org/details/manga_Jojos_Bizarre_Adventure_Hajishirazu_no_Purple_Haze
And as I was saying, I really enjoyed it. I liked seeing more to do with Fugo, since his departure in the group during Part 5 proper, this particular novel taking place after the ending.
Some things came up that I didn't think I would hear about again, such as a relation to Tonio (the Italian chef person from Part 4). And then again things I expected to see but not as often as I did, such as Fugo contemplating his past relationship with Narancia. (Seriously, I didn't keep track, but musings about Narancia must have come up nearly at least once per chapter).
Nice way to finish off revisiting Part 5... onto Part 6 for me now.