Security guard Clive Carter was jailed for 20 years last week for killing Kanokporn Satjawat with a fire extinguisher at the Scottish Exhibition and Conference Centre in Glasgow last November. The victim, from Thailand, had been attending an HIV drug conference.
It emerged at his trial at the High Court in Glasgow there had been a missed opportunity to catch him.
Stephanie O'Brien, from Millom, Cumbria, told the trial how she had been confronted by Carter when he worked at the Holiday Inn Express Riverside Hotel in Glasgow.
Ms O'Brien, 24, said Carter, who had helped her earlier, had knocked on her bedroom door clutching a fire extinguisher when she was alone, claiming falsely she had reported a fire. She managed to shut him out.
Ms O'Brien reported this to staff, but she says they did not take her seriously. She told a Sunday newspaper she would not be able to put her ordeal behind her until the hotel apologises.
Ms O'Brien has been seeing a counsellor for stress as a result of her experience, which led to her appearance in court as a witness. "It has been a tough year," she said. "The police said I'd had a very lucky escape."
The hotel is owned and operated by Somerston Hotels, under a franchise agreement with InterContinental Hotels Group (IHG).
A spokeswoman for IHG said Ms O'Brien had not formally reported the incident to staff at the time, adding: "We have no evidence to suggest hotel staff behaved other than in an entirely appropriate way."