The phrase "double vanity" refers to a type of bathroom sink or countertop that has two separate sink basins, allowing two people to use the sink at the same time.
The bathroom comes with double vanity along with the bath tub overlooking the sea through the window. (takeoffwithmiles.com)
The 2nd guest bedroom offers a queen size bed, flat screen TV, private balcony, and shares a full bathroom featuring double vanity with the bunk room. (wyndhamvacationrentals.com)
This modern family bathroom has been fitted with a stylish grey double vanity unit to provide plenty of storage. (idealhome.co.uk)