Hotel Inferno(2013)

Contract killer Frank Zimosa has been hired for a ridiculously lucrative mission by the rich and powerful Jorge Mistrandia. The objective: kill a couple of people hiding in one of his European hotels. What would look like one of the simplest jobs Frank has ever had is about to turn into a living nightmare. He will soon realize he's nothing more than prey for Mistrandia and his army of mutated henchmen that have been hiding in the hotel along with an ancient and unstoppable horror.