A marble basketweave would be very in keeping with an older home. It is what was original to a 1930’s house I used to own. For my current old house bathroom project, which is still in the ”dream” stage, I have been thinking about wood look, but not plank, parquet.

Both good ideas!

ooooohhhhhhhh I am liking your choices. So pretty and the basketweave idea is perfect.

Here is one image that comes to mind.. Not this color but this idea

1930's Retro Corvallis Bath with Black and White Tile · More Info

I know you said you are already using penny round but I love this combo

1930s bathroom updated for 21st century · More Info

Yep! Did more thinking. I believe I will use this for my other bathroom instead.

The flooring that you selected picks up the gray countertop, but I would dump the gray countertop and find a cheap remnant instead unless that is real marble

Ugh, I can’t remove the attached pic but disregard. Yeah, I will make sure countertop is mostly white Carrera. Good point.

You might be able to replace the black hex tiles in those sheets with green tile to go with your beautiful Morris wallpaper.

You need to discover the wonderful world of Heritage Tile Subway Mosaics. https://www.heritagetile.com/subway-mosaics-design-guide

You can custom design floors using their colors, shapes, and patterns. Download their PDF for some great inspiration - the last pages of the PDF. They have greens, bone, white, cream, and more.