The phrase "large vanity" refers to someone's excessive pride or self-importance. It means they think highly of themselves and are overly focused on their own appearance or achievements. Full definition
It provides the large shower with bench and large vanity with granite top, a queen bed and sitting chair. (magnumbelize.com)
Because I am curious, I am going to try a different method to the other, larger vanity soon. (ourstoriedhome.com)
There is a large walk - in closet and a huge ensuite bathroom with separate wc, large vanity unit, walk - in shower and a giant corner bath - tub. (sunshineinflorida.com)