I Became the Tyrant's Chambermaid

When Lee Chae-Rin kicks the bucket, she’s whisked into a dark fantasy novel as Rose Estania, a chambermaid at the mercy of the tyrant crown prince, Kalix Forsman. Armed with nothing but her real-world hotelier skills and a diary from the real Rose full of cryptic hints but no escape route, she's forced to navigate a dangerous world teeming with Kalix's enemies. Can she keep his wrath in check, evade death, and find her way back to reality before it's too late? (Source: Tapas, edited)