The advantages of such a method for installing washing can be attributed to the following factors:
Additional place for storage. How not to twist, but there are never excess shelves. Especially in the bathroom. Therefore, this option for installing a washbasin with a cabinet always wins in this regard. In such a cabinet under the sink, you can add detergents, as well as personal hygienic accessories and cosmetics. This will not force the corners of the bath and washbasin, but, on the contrary, hide everything from the eyes of outsiders