This series started off strong, but the final season definitely left something to be desired. While Kevin Spacey's departure was understandable, the show just didn't work without him. I feel like if they would have just taken some extra time, they could have come up with a better final season. It was not good. So, my rating is more for the first five seasons. The final one was more like a two, but I'm not going to factor that in.
My rating: 4/5