Allison Keene from Paste wrote an extensive review about Season 2.
But lo! With Season 2, Sanditon is reborn in six episodes that seem to ask, “you want Austen? Well then I’ll give you Austen!!” Often a pastiche of well-worn tropes and some very familiar plots lifted straight from Pride & Prejudice, Sense & Sensibility, and maybe even Persuasion, the new season of Sanditon is nevertheless very satisfying. It’s also almost entirely a clean slate.
https://www.pastemagazine.com/tv/pbs-masterpiece/sanditon-season-2-review/