My Sim lives in the apartment with gremlins - stuff broke nearly every night of the few days I've played the game - lots of repair bills...
But, the trait is removable, so I may just remove it - or add the gnomes, I'll think about it.
Just some pictures for the fun of it:
https://67.media.tumblr.com/bda5ea80720870f2ce6530fe7dfa0530/tumblr_ogr5ogiKms1v8k7elo1_1280.jpg
https://66.media.tumblr.com/5793c00848b955b90a763c987545640e/tumblr_ogr5ogiKms1v8k7elo2_1280.jpg
https://67.media.tumblr.com/ebfaf390aedeee7fabb55e8d823a9f88/tumblr_oge6v4fwUD1v8k7elo1_1280.jpg
Luckily, it's a small apartment, but the first time this happened my Sim really needed to pee when she woke up - but she had to fix the toilet first...