🌟 It had lots of faults which couldn’t be overlooked.

🌟🌟  It was just OK, had some faults, and failed to wow.

🌟🌟🌟 It was enjoyable, a good read, but still lacked the wow factor.

🌟🌟🌟🌟 It was really good, pretty nearly faultless, and had the wow factor.

🌟🌟🌟🌟🌟 Wonderful, exceeded expectations, and was faultless. Perfect book!