Although almost the entire plot of the film revolves around a story unfolding in one hotel room, it was filmed in several locations. It was not possible to find a lobby that was both luxurious and interestingly frightening enough, which would also be in a large New York hotel that is gloomy and monumental from the outside. Therefore, several shooting points were used, and additional sets had to be built to imitate the hotel room, as they had to be burned, flooded, and destroyed, so they did not do this in a real room. 

Filming Locations:

Hotel "Dolphin"

In the Movie

Scene where Writer Mike Enslin arrives by taxi at the huge Hotel "Dolphin", he carefully examines the monumental building and, after paying the driver, enters the building.

In Reality

The scene was filmed at the Roosevelt Hotel in New York. The exterior of the building looks exactly as described in the plot: it is large and located in the city center, and the windows of some rooms indeed overlook the courtyard.

Lobby of Hotel "Dolphin"

In the Movie

Scene where Mike Enslin is a writer specializing in debunking paranormal phenomena. He learned that in the Hotel "Dolphin", room 1408, a huge number of murders and suicides have occurred. He arrives at the hotel to spend the night there and write a chapter in his book, but at the reception desk they do not want to check him into the room and invite him to speak with the manager.

In Reality

The scene was filmed at the London "Reform Club" - an elite establishment founded about 200 years ago to bring democracy to Great Britain. The building has a very beautiful lobby, which was ideal for the film, as according to the plot, the Hotel "Dolphin" is a very expensive establishment.