Apart from the rapes, I did enjoy the book. But by the 3rd description of gang rape I just got the uncomfortable feeling that the author might be enjoying writing them. Also the boob squeezing - was that necessary? William was definitely the character the writer enjoyed writing the most - he had a more fleshed-out personality and motivation than any of the others.
Without the rapes I would have been singing its praises. Loved the tit for tat nonsense of the cathedral building, loved the real historical background, loved the descriptions of medieval life - absolutely fascinating, and vividly written - especially the castle raid, and the way the town grew.
Also, now I think of it, Molly didn't really get a story arc. She just petered out (won't spoil an important bit later on but she really could have been a part of that - you know what I mean if you've read it).