Your kitchen is transitional in style (flat doors, provincial handles etc) so you have a number of options for your splashback. You don't have a huge area to cover - you could get your stone mason to use the same stone as the benchtop. A glass splashback would also work well. As for tiles, you could try the provincial subway tiles that are slightly irregular/rough to match your handles.

Is this waterline tile the "Luna" tile that you are thinking of? It is more a creamy beige colour? Looks good to me. I have clients who used a pure white pool tile, which is much lighter and brighter than your Luna and the pool looks fantastic and a beautiful blue, so I would not have any concerns with using Luna as a waterline tile. Best of luck, Dr Retro of Dr Retro House Calls

Thanks Kate. Which other wall do you suggest the one parallel to the half wall?

Many thanks, much appreciated! Loving photos 1 and 3 for the tiles and 2 for the vanity! The black fittings look great 🙂