If you can suppress the desire to see the books on the screen, the show is probably okay for you; it seriously jigsaw-puzzled the books and only retained a few, mostly superficial parts thereof, but if you can separate it from your knowledge of the books, it's a reasonably enjoyable show - one of the few that Syfylis has done that don't out-and-out suck. But that's only if you're not expecting to "see" the books.
It was good enough that my wife and I were disappointed when it ended; we then found out about the books and never looked back. I'm just glad it happened in that order, because I would've been royally pissed at everyone involved if I had seen the books first and THEN saw the show - would've felt betrayed; as it was, we had fun with the show and then a lot MORE fun with the books.
I watched the first episode before ever reading any of the books. In my experience, the book is almost always better than the TV show or the movie, so the next day I bought
Storm Front and read it. Then I bought all of the others out at the time, which was shortly before
White Night was published. I read all of the books, including WN, before watching the second episode of the show.
It worked out pretty well for me; the first episode let me know that I should check out the books, while also allowing me some warning about what the show was going to be like by the time I'd finished the books. I knew already that the show wasn't much like the books, and I was a little reluctant to start watching from the second episode onward since I liked the books more than what I'd seen of the show. Eventually, though, I did start watching the show again, and because I already had some idea of what to expect, the differences didn't hit me as a huge disappointment. I actually kinda liked it, and I would've kept watching if it had stayed on the air.