If you want the wall and floor tiles to be the hero in your bathroom I recommend you keep the vanity very simple. The white cabinet you have will be least obtrusive with a 'white' top. I love the elegance of stone and man-made stone is generally more durable. Check out Caesarstone Organic White or Frosty Carina. Although Frosty Carina has more pattern than Organic White, it's quite discrete so shouldn't compete with pattern on the tiles. If the tiles are charcoal or a dark brown/grey then either should work. Love to see a photograph when it's finished, whatever you decide.

Houzz is the perfect place to search using the search bar above for images that feature things like that.

Thank you everyone, lots of food for thought. oklouise, would you have the false wall going all the way along the bathroom or just jutting out behind the vanity? We have a few cm to work with as the vanity we are looking at is a little narrower than it could be. jacqueline thank you so much for your photo! Something that goes down a bit lower might help disguise the pipes, ours will be a much smaller room than yours. siriskey, I have attached the plan for this room to see if it is helpful. I am leaning towards choosing a different vanity but as you have said this one is lovely! But it won't be lovely if it doesn't work...!

the problem with this combination is that unless the tap is located extra high there is difficulty doing normal handbasin things like using a glass, or scooping water to wash your face...we have a similar tap over a drop in basin ...the tap allows the water to fall into the centre of the basin but the tap is too long and too low for comfort ... raising the tap would interfere with the wall mirrors so tap will be changed to a tall counter mounted tap for easier use and we never considered a raised handbasin for all the same reasons and imo they make any but super sized vanities look so cluttered