It may be tough to rent the room where the girl was killed. People are going to ask, "is that the room where that poor girl was killed?" This is a huge problem for hotels. People are superstitious, this is why there is no 13th floor at the Sheraton or many other hotels. The movie "1408" with John Cusack and Samuel L. Jackson focuses on a hotel room ("1408") where a past murder occurred and demonstrates the issues hotels have, with murder mystery writers being the only guests interested in staying in those rooms.
I believe the owners will be questioned about what security they have. This reminds me of a murder that occurred at a hotel in Connecticut several years ago that was somewhat similar to this one. A girl ran into her ex-BF at a party at the hotel which was a large hotel in Stamford. When she saw the ex-BF she left the party and took a service elevator to the lobby level restaurant. The ex-BF followed her down the elevator and attacked and stabbed her to death in an area near the service elevator. There are questions about security but in Connecticut there is an innkeeper's law under which innkeepers have a duty to:
(a) to protect them against unreasonable risk of
physical harm, and
(b) to give them first aid after it knows or has
reason to know that they are ill or injured, and
to care for them until they can be cared for by
others.
This is based on the Restatement of Torts which is adopted as common law in CT and may be so adopted in Montreal/Quebec but I do not know.