Unscrupulous was raunchy and at times fun. Moments of vulgarity may put off a few readers, but if you go with the mindset that the characters are looking for some good, dirty fun you may enjoy it. Taddy reminded me a bit of Samantha (SaTC) Jones at her bluest, and Warner is more likable than other billionaire heroes I've read.
I have to admit, I enjoy the interactions between Taddy and her friends more than the romance. Their friendship and backstory is fascinating, and there's a bit of mystery concerning Taddy's past toward the end. Maybe it will be revealed later on, but I have a good idea what it is.