I've read a lot from Courtney Milan before and I would recommend all of her books (Unlocked is a great place to start), but I think this one might be my favourite. I think that the characters are endearing, the plot is solid, and the chemistry is extremely well-written. I don't tend to find the sexual dynamic very interesting in romance novels (because they are so often excruciatingly badly written and cliched), but I genuinely found some of the scenes in this book *hot*. The writing style is also very refreshing--there is some lovely language, but it's never overwrought. The prose is crisp and concise, and the dialogue is engaging and frequently funny.
On top of everything else, Courtney Milan is a woman after my heart in terms of the social issues she sneaks in here and there. In the books that I'd read from her previously, she had worked in female masturbation as a positive and empowering thing, she had written a fantastic novel that successfully inverted the female virgin/male libertine dynamic, and she wrote heroes who had conditions like dyslexia, bipolar depression, and (probably) something like Asperger's. In this novel, there's a little bit of back-story devoted to a gay couple helping to raise the heroine. It's not a significant part of the novel in any way, and I'm sure you'll still enjoy the novel even if you're against gay marriage and gays being parents, but I really appreciated it. Romance novels--especially historical ones--can sometimes be the breeding ground for the most backwards, rigid, hetero-normative gender structures, and it's nice to see Milan pushing against those gender norms here and there.
In sum, I can't imagine anyone not enjoying this book. It is sexy, funny, sweet, and extremely well-written. Buy it!