It's got stacks of really excellent reviews (and no, I haven't got that many friends!). A while back I wrote a blog post with a few excerpts from some of them; it's HERE
You don't need to know anything about history to enjoy it; it can be read just as a contemporary drama. For my test readers, I chose one who knew absolutely nothing about the period, not even the names of all Henry's wives, to make sure it stood up convincingly.
The sequel, Last Child, is also now available.