Secret Bedroom
If you’ve watched the cartoon, ‘Dexter’s Laboratory,’ you were probably as fascinated as we were with the idea of a secret lab that could be accessed by a secret bookcase entrance. This find is not as riveting as a hidden lab but it’s still pretty cool. Apparently, the OP was staying at a house for New Year’s Eve and discovered a hidden bedroom behind a bookshelf.
As far as we can see, there’s a cozy bed and it’s away from the prying eyes of the world. That sounds like an introvert’s dream room to us. It would also serve as the perfect panic room in case there’s a zombie apocalypse.