Hobb's world is a pretty standard fantasy-medieval setting, one where there is no particular need for supernatural monsters, humans doing just peachy filling that role. The characters are interesting, unique, and have strengths and weaknesses. Conflict doesn't necessarily come from "evil" as much as conflicting interests or personalities; of course madness and paranoia and lust for power and wealth are always good motivations as well. Her prose is competent and pleasant to read, but never really rises to an amazing experience. Her plots are overarching and well crafted.
Now, for the bad (mild spoilers ahead): The realm and its heroes are threatened. Things get worse. And worse. And worse. Things are kindasorta maybe fixed. The end.
The books are long. You spend a lot of time with the characters, watching them lose loved ones, make mistakes, learn, sacrifice their dreams for the greater good. And in the end... I'm not necessarily insistent on a Hollywood-style happy, unrealistic ending every time, but I was left pretty distraught by the fates of the characters. A lot of the growth seemed for nothing, a lot of the side plots and adventures never saw fruition.
I'm conflicted; there are many good aspects to the trilogy, but in the end I was not happy with my experience, so I'll rate it two stars.