While not great, certainly better than a lot of B movies. I think its obvious from the title and summary what your going to get. You cant expect it to be a top cinematic movie, and while the plot is straightforward it was still an enjoyable movie to waste a couple of hours.
One of the better Asylum films/B Movie films and if you go in without huge expectations (and again why would you for this type of film) then just enjoy it for what it is.