Yeah I've heard of that room. I think it's a myth, or, marketing, more than it is really a terrible experience. Given my tinnitus, it wouldn't be silent for me at all, so it wouldn't be any different to just chilling on my sofa with my cats. Which I can do for days if given the choice!

Perhaps it depends on the personality though. Some people thrive on noise. My sister who is not mentally well tends to make sure there is TV on 24/7, day and night, only pausing for music, presumably because silence is unbearable to her.