(idiomatic, location) So as to be hidden from plain view (and thus easily ignored or overlooked).
to sweep (something) under the carpet
Used other than figuratively or idiomatically: see under, carpet.
Source: en.wiktionary.orgI certainly have been guilty of trying to sweep things under the carpet. Kenneth Branagh
For too long we have swept the problems of mental illness under the carpet... and hoped that they would go away. Richard J. Codey
There are lots of things that you can brush under the carpet about yourself until you're faced with somebody whose needs won't be put off. Angela Carter
I'd had episodes before, but I swept them under the carpet. This time, I couldn't do that because everyone knew. I got on with the hard work of getting better and haven't had a blip in almost 10 years. Margot Kidder