Murder on the QE2

The confined setting adds a unique layer of suspense, but I'm curious if the idea came early or evolved during writing. Did the ship's atmosphere influence the story's tone?

Some sections felt more detailed than necessary, but it also made the setting more immersive. How did others experience the balance between intrigue and description?

The ship's history and glamour add so much charm, but I wonder if the author had a particular reason for choosing this vessel over others. Was it based on real events or just a love for cruise lore?