The Burgh hotel (see link) was a real life, known location for Agatha Christie. Perhaps this was the one?
It's a classic kind of like murder on a train.
Agatha Christie's Marple - 2004 At Bertram's Hotel 3-1 is rated/received certificates of: Australia:M Australia:PG (DVD rating)
Agatha Christie's Miss Marple At Bertram's Hotel - 1987 TV is rated/received certificates of: Australia:M UK:PG (video rating) (1997)
Swan Hydropathic Hotel (now known as the Old Swan Hotel) in Yorkshire.
After disappearing, Agatha Christie claimed that she couldn't remember how she got to the hotel where she was found, or what happened during the eleven days that she was missing. Other than this, she didn't suffer from everyday memory loss. It is likely that she experienced a dissociative fugue, which is a rare, temporary psychological disturbance. She would have no memory of the incident.
Agatha Christie's highly publicized 11-day disappearance in December 1926 generated widespread media coverage and speculation. She was eventually found in a hotel in Harrogate, claiming amnesia. The incident remains a famous unsolved mystery in her life.
The setting for "A Caribbean Mystery" by Agatha Christie is primarily on the fictional Caribbean island of St. Honoré. The story takes place at the Golden Palm Hotel, where Miss Marple is vacationing. The lush tropical surroundings and the exotic location add to the mystery and intrigue of the novel.
In "The Eleven Missing Days" by Agatha Christie, the main characters involved in the mystery are Sir Henry Clithering, Chief Inspector Japp, and Hercule Poirot. The story revolves around the enigmatic disappearance of a wealthy man named Elspeth McGillicuddy on a train journey, which leads to a complex investigation.
in 1926 agatha christie disappeared, after finding out about her husbands affair. 11 days later she was found with a severe case of amnesia, checked in to a hotel in harrogate under the name of Teresa Neele, which strangely is the same surname; 'Neele' of the woman agatha's husband had had an affair with, her name was Nancy Neele. Public reaction at the time was largely negative, with many believing it was a publicity stunt while others think she was trying to make the police believe her husband had killed her.
In the book "Murder on the Orient Express" by Agatha Christie, the Orient Express stops at several locations including Istanbul, Belgrade, and Zagreb. The main setting for the novel is on board the train while it is traveling from Istanbul to Calais.
Agatha Christie went missing in 1926 following a personal crisis, which included issues in her marriage and potentially a nervous breakdown. She disappeared for 11 days before being found staying in a hotel under an alias. The reasons for her disappearance remain a subject of speculation and mystery.