The City of the Dead (also titled Horror Hotel in the United States) is a 1960 British supernatural horror film directed by John Llewellyn Moxey and starring Christopher Lee, Venetia Stevenson, Betta St. John, Patricia Jessel and Valentine Dyall. The film marks the directorial debut of Moxey. It was produced in the United Kingdom but set in America, and the British actors were required to speak with North American accents throughout.

https://en.wikipedia.org/wiki/The_City_of_the_Dead_(film)

https://www.rottentomatoes.com/m/horror_hotel