I have no idea what timber veneer is. Sounds like a marketing ploy to sell more stuff. Initially I thought it may be relcaimed wood veneered or rustic styles, but that vanity in neither. Just looks like wood veneer to me. Don't be sucked in by manufacturers terms, especially the new ones they make up to make you feel you are behind the times, or getting something special. They are in the quantity not quality business.

There is nothing is nothing wrong with quality veneered pieces. Veneered pieces have been found in the pyramids. Notice I said quality. Veneer originated from the desire to reduce the use of expensive quality woods by putting a thin layer of it on a suitable substrate. The substrate was originally solid wood. Now you get the junk made from cheap particle board, and particle board is not a good thing where there is water (bathroom). Some particle board is acceptable for veneer, as is some plywood, but the cheaper furniture (flat pack or RTA) usually doesn't use the right stuff.