The Russian word that appears at least twice (supposedly the manufacturer of a piece of electric equipment) is 'Covfefe' in Cyrillic letters.
The hotel is named for the Greek goddess Artemis, who was born in secret to protect her from the wrath of Hera, queen of the gods.
Despite the fact that many of the characters' real names are revealed in the film, the end credits only list their code names. The Nurse, Waikiki, Niagara and so on.
Both Zachary Quinto and Sofia Boutella starred together in Star Trek: Beyond (2016).
There are four patient rooms in the Hotel Artemis: Niagara, Honolulu, Accapulco and Nice. Patients assigned to these rooms are only ever referred to by that room's name. Sterling K. Brown's character is called "Waikiki," because he shares the Honolulu room with his brother.
As seen on the official trailer, Hotel Artemis 10 rules are : 1. While on the premises, no fighting with or killing other patients. 2. No disrespectful words or actions allowed against Hotel Artemis staff. 3. No guns of any type of weapon permitted through the gates. 4. Memberships must be paid for in full and in advance. 5. Prior but lapsed members will not be admitted 6. No photography or video allowed. 7. No outside food or drink. 8. Absolutely no visitors. 9. If member is found to have compromised or led to compromise of location, membership will be revoked. 10. Hotel Artemis rules are final and non negotiable.
Kenneth Choi and Sterling K Brown both appeared in "The People vs OJ Simpson" (as Judge Lance Ito and Christopher Darden, respectively).
-To promote the film, Global Road Entertainment released a set of character posters, each featuring an homage to a famous literary or film reference from Los Angeles, such as Sterling K. Brown merged into the book cover for Raymond Chandler's novel The Long Goodbye and Charlie Day merged into the film poster for American Gigolo.