maybe put the marble in the areas where there is less traffic/wear....I think marble looks best when it is used as features/accessories rather than everywhere....if it is used too much in the space, it tends to lose its wow factor a bit...maybe marble in one area of bathroom and then on bathroom bench top....if it matched, and you wanted to still use the black in the main bathroom then perhaps you could do a small feature of marble in it somewhere, so that it ties in with kitchen and ensuite

I spent so much time considering this for our bathroom reno and came to the conclusion that:- - If you have plenty of space and need lots of storage, go for a floor standing vanity. - If you don't have much space, select a wall hung vanity - as it will be easier to clean underneath in a small area and gives the illusion of more space.

Thanks everyone. Nik Star I did get some colour swatches for navy, but then didn't have the courage to go ahead. Think I will have to just be content with some navy towels.

No you DON'T waterproof over plasterwork! You must install villaboard (cement sheet product) to wherever you are applying a tiled finish. Tapware is always fitted off AFTER tiling finish, however if you are having shower mixers the in wall-units need to be positioned in the wall BEFORE the wall lining goes on. If you are fitting towel rails and toilet roll holders you also best fit some timber framework so you achieve a solid fixing into the wall, as opposed to relying upon plaster anchors that typically rip out over time. You can insulate wherever you can. A good tip is to also insulate directly around/under a bathtub you have a hob mounted bath - it retains the warm water temperature so much longer if you do