There is no way this was written by people who wanted to tell an entertaining story. Granted, there are the very vaguest bones of an idea hiding beneath the bloated flesh of what actually happens, but none of them really come to the surface.
Acting is barely passable. All technical aspects seem to be done professionally enough. The house is a gorgeous setting. But the script and 'humor' and 'horror' are giant fails.
This didn't lean hard enough into the comedy aspects, so the caricatures come across as insulting stereotypes. Nor did it lean hard enough into the horror aspects, meaning it wasn't gruesome or creepy. Characters were stupidly flawed, cell service failure was yada-yada 'a dead zone', and nothing really made sense. Even the twist and follow up were hollow and weak.
I truly believe that whomever was in charge expected that having some horror icons in the cast would elevate this to cult status and all the numerous flaws would be overlooked. But nothing about the movie hits that cult, spoof, self-aware, cheesiness that it was looking for.