The 44-year-old rang police for help in Lahnstein, near Koblenz, Rhineland-Palatinate, after waking up to find the alleged stranger between the sheets.
But when officers arrived, it turned out that the supposed interloper was in fact the woman's husband.
Both members of the couple were drunk and made a further report to the police that people wearing ape masks had been wandering around the hotel.
The officers and hotel staff attempted to calm the couple without success.
In fact, the woman was so distraught that she later went to a nearby police station and reported the events again.