Let's call this historical-ish.
Eleanor of Aquitaine, who was amazeballs, was made boring as hell for more than half of the book. This intelligent, strong, feisty twice-queen apparently spent a lot of time being sex crazed and thinking of only (tedious) sex with whatever man she could get near. Her motivations being squarely housed between her legs downplayed her accomplishments and abilities by quite a bit.
When she got tired of her philandering husband (and bearing his children), she got a little more interesting, but not by much. The book effectively ended with Henry's death, everything else in her life made into an epilogue.
The sex was explicit, and yet boring. And a chore to read through.
I was disappointed. I really liked Weir's Innocent Traitor and heard good things about The Lady Elizabeth. I expected this respected historian to put another good showing in for this book. Instead it was boring and tedious.