Hey there! I felt that craving hit too a while back. And guess what? Success! I found them at a local grocery store that has a reputation for carrying discontinued and hard-to-find items. Don't give up! Check small shops, those places aren't just for hipsters looking for obscure vinyl records, …
Dunno if this helps but there's a coffee table book on noir films I have that includes a section on urban legends and lost films. Might be a shot in the dark but maybe 'Ghosts of the Hotel' gets a mention there? I'll flip through it later and get back …