The character name of Hata Sari (played by Marion Jacob) is a spoof of the name of famous Dutch spy and double-agent Mata Hari.
This movie is about a young man who thinks he is James Bond. The movie was actually first released between the Bond movies You Only Live Twice (1967) and On Her Majesty's Secret Service (1969), the latter also being filmed in Switzerland, 'Bonditis' beating the first big skiing Bond movie to to the big screen by about a year.
This movie's full title was actually Bonditis, or the Horrible and Terrible Adventures of a Nearly Normal Human Being.
The film's 'Bonditis' title is a play on words of the last name of the James Bond character with it suffix 'itis' common in medical terminology for diseases and medical conditions. The title is actually what this describes in the movie for a medical condition of someone who thinks they are James Bond.
The 'Hotel' was in Bergün, Grishun, Switzerland.