If you won't use it, then I would get rid of it. Otherwise, it just becomes something else that you will have to clean and, depending upon the dimensions, cleaning around the base of a free stranding bath can be a challenge. This may also allow you to have a separate enclosed toilet, double shower and/or double vanity (if you don't already have those), which may offer more practical benefits than an infrequently used bath. If necessary, possibly consider upgrading the bath in the main bathroom to a more luxurious size so that if you do feel like soaking in the tub, that option will still be available.

depends what else is in the room? please post sketch of the whole room with other fittings and all measurements

Are you kidding us all? That looks fantastic!!! That bath and spout are spectacular and both look absolutely amazing. The spout looks excellent where it is, you do not want to hide it, show it off and no it does not obstruct the look of that divine bath. Well done italiangal

Hi Tash, I would stick with the white paint. You have noted you want timber, marble, grey, white and brass in the space and I feel that if you now add a colour to the walls that doesn't blend with the tiles that sit on the same wall there will be too many finishes in the space. Quite a few manufacturers have tiles similar to the one in your image so I'd check with your local supplier. If you do go with the subway tiles perhaps look for a handmade style tile and lay them as a herringbone style with white grout to get the same textural look you are after. Good luck! Regards, Kathryn.