I really like this show despite how awful parts of it are. Unlike some shows that have awful parts/scripts/acting/etc.. this one isn't taking itself seriously, so I can roll my eyes at those parts and then laugh about it. At the same time, it surprises me with how realistic certain plots or reactions are. I.e. the girl going 'amish zombies? Really??' cause that's exactly what I would say in that situation. Or, people not making cliched horror movie mistakes. 'Oh, this place is full of zombies, let's explore it!' instead someone will say something like 'uhh.. fuck that, we can find what we are looking for somewhere else'. Or, the characters in the show don't get surprised by ninja zombies like in walking dead.. I could go on and on.
I'm not saying it's super realistic and has the smartest writing ever, it's very campy, but it doesn't insult the viewer's intelligence in the process. They know when they are being silly and make it obvious so you are in on the joke.
Overall, I enjoy it as a guilty pleasure type of show. It's not the best ever, but I enjoy it.