The story revolves around a group of assassinated killers in an isolated rural area, where they take a distant hotel isolated to commit their horrific and frightening crimes against the hotel's guests and not only these crimes, but they filmed them naked and tortured by the most terrible ways and this hotel has two people and must escape from this trap.
The point of Vacancy is the terror, not the torture. Horror is vastly more effective when left to the mind's eye and it is what we can't see in Vacancy that truly frightens.
It's welcome to see another movie that relies more on apprehension and suspense than torture chambers. Vacancy might not get Mr. Hitchcock smiling from above. But he won't be spinning in his grave, either.