Hi Kirsty, could you please advise the colour of your vanity and whether it is a custom made one and if not, could you let me know its name and where you bought it. Also, what is the colour of your floors tiles and where did you get them from. (I have come to the conclusion that charcoal/dark grey tile plus a much lighter grey tile plus white on some walls plus a timber vanity or timber accessories in bathroom , plus white (or close to it) below sink counter top is the way to go for a beautiful bathroom. The trick is figuring out exactly what proportion of each colour to use and where to put them for each particular layout.

Large format tiles, such as your 700 x 400 choice look great in large rooms. However with smaller spaces, such as bathrooms in a unit then you really have to plan carefully with your tiler the relationship of the floor waste, the slope, and the grout lines. If your tiler starts setting out the tiles from your entrance hall you may find that there is only one off-centre grout line down the middle of your bathroom , or an awkward transition to make it work with the existing floor waste. A smaller square tile, such as 400 x 400 will be easier to work with, easier to set out, easier to work with slopes, and the position of the grout lines will be less crucial.

I'd just live with it, paint the walls and vanity your sage green. My decision would be based on the fact that getting rid of the pattern is either going to be extremely time intensive or $$ intensive for not much gain. You can leave that pattern and update the bathroom easily by painting walls and vanity. The only way to get a nice finish on painted tile is to have it resin coated professionally. It's not cheap. With a stone toned bathroom it's always going to look dated because that colour way has been out of fashion for about 30yrs anyway. Best to just update cheaply and refresh the whole bathroom once it's no longer servicable. You spend on average 30mins a day in the bathroom. If it's neat and clean that's good enough. Close the door on it after use.

How big are the floor tiles? It may look unbalanced with a more delicate tile in the floor and the 600x300 on the wall. Are you able to continue the flooring tile up at least one wall for cohesiveness.