A Ho Hum Book Review

Can someone please tell me what is so hot about The Guernsey Literary and Potato Peel Pie Society? This is a newish novel by Mary Anne Shaffer, and I keep seeing rave reviews about it in all sorts of places. I read this book, and I don't get it. It's a little book about a little island. The set-up is unique and so is the title, but otherwise it is just a sort of cute little story. The reviewers are treating it like great new lit, and I really cannot see what all the fuss is about. Perhaps I've spent too many years in the YA trenches, and I just don't get "real" literature anymore. I expect something remarkable before a book goes on my best loved list.