Everything you have heard about this game is true: The graphics aren't great, the battle engine is rough and the voice acting is only half-step above high school theater. Nevertheless, this was actually a good game.
It mixes an interesting (and appropriately brutal, given the source material) story and enough of your RPG stand-byes (weapon, armor, skills, etc) to make for a compelling game experience. I particularly enjoyed the mechanism of warging into the dog (Mors' special skill) as it made for a different gaming experience than the standard hack and slash.
It isn't a perfect game. There were some fights that were strangely difficult compared to previous fights and the first hour of backstory until things get going is downright brutal, but at the end the game had my interest enough that I wanted to play both endings out.
One last proviso: I am a huge A Song of Ice and Fire fan, and many have suggested this enhances the gaming experience. This is probably true and it was my fandom that pushed me past the game's initial awkwardness. However, I'm also just an RPG fan, and it was those elements that kept me playing.