It's a good show, but it has issues
Part 1: Has a fun story, but outside of the main cast has very boring characters. Speed-wagon truly is best waifu
Part 2: Everything about it is better. Better Jojo, ensemble, Villain, soundtrack, and especially story. Honestly like the risks this took instead of part 1 being mostly normal.
Part 3: This has better things than Part 2, but things are worse than part one. It often works as a villain of fortnight with two episodes with one small antagonist (Hol Horse as exception). However Most of the main casts, soundtrack, and Villain are even better. Still info-dumping characters during death trait make it slightly worse. It does good for an intro to stands
Part 1: 3/5
Part 2: 5/5
Part 3: 4/5