Can you help me name this old film?

[HettySunshine]

I can't rennet very much about it at all. I think it's maybe 50's to 70's.

Set in a hotel in Europe. Sort of glamorous golden age of film style.

One of the hotel rooms 'disappears' and all the hotel staff pretend there has never been a room with that number.

One of guests is determined to prove the room exists - they find the door hidden behind a false wall that's been decorated to look like the rest of the corridor.

Maybe some died of a contagious disease and the hotel tried to cover it up?

Not much to go on, but any ideas??

[KitchiHuritAngeni]

Is it So Long At The Fair?

That has a missing person as well as a missing room.

[Whatevergetsyouthroughthenight]

Yup. So Long at the Fair. Took a 2 second google. en.wikipedia.org/wiki/So_Long_at_the_Fair

[HettySunshine]

Amazing! Thank you.