system
Given the following post, respond as if you're commenting on Reddit:
human
[HARRY POTTER] ROOM OF REQUIREMENT?

We all remember Dumbledore's Army using the Room of Requirement for training, and that if we really need to hide something it may open up for a hiding place. And of course rumors that it will even give a toilet if you really really need one! 

But what happens once the room is left empty? Where does it go? And where does all the stuff in it go? Also, if I'm standing in the Room and I have the Marauder's Map how will I/the Room show up on it?
gpt
*"Where do Vanished objects go?"*

*"In nonbeing, which is to say, everything."*

The Room and its contents are atomically deconstructed and suspended in the fabric of spacetime until it is required again, at which point the room is Unvanished and reconnected to reality by the trans-dimensional portal disguised as the door. 

It's a masterpiece of magical spacial manipulation. It's a pity that the method of its creation has since been lost.