The phrase "to update a bathroom" means to make changes or improvements to the bathroom in order to make it look more modern, attractive, and functional. Full definition
The master bedroom has a TV and completely updated bathroom with large walk in shower. (wyndhamvacationrentals.com)
If you're thinking about updating your bathroom, a contemporary design will create a fresh and beautiful environment for you to enjoy. (idealhome.co.uk)
Over the years, they'd kept their condo in tip - top shape, even completely updating the bathroom. (centercoastrealty.com)