It's an interesting setup that goes nowhere. The first two thirds of the show are just the characters figuring out that "it's vampires", and then being convinced of that fact. That's way too long for a show that the viewer knows is about vampires. There are groups of characters that vanish for large stretches of time and then reappear. There's character development for some characters but not others. Characters act in ways that don't match how they've been portrayed.
It's poorly paced and the ending isn't satisfying. If it had less characters, fewer episodes, and told a more concentrated story it could have been something unique, but as it is it's just another vampire romp. If that's what you want, it's not totally unenjoyable, it's just nothing you aren't expecting.
