Post photos of the space. I like your tiles together, and would use the penny rounds on the shower floor for contrast if the room is large. Is your shower area also 10 1/2 feet tall? You might consider lowering the ceiling in just that area, but it depends on the room arrangement. With the plaid floor, I'd use a white grout that matches the shower tile to minimize more lines, especially if you're also using shiplap. What are you doing for a countertop? You might consider a stained wood vanity with a solid white countertop for some contrast and warmth. If you want a white vanity, you may want to paint the shiplap a color, or use a darker countertop.

I like your tiles. (Except I might go w/a less wavy white tile, and something a bit larger. like a 4x12)

4x7 is a large shower. mine is almost 4'X8' and I did the 4x12 white, with a full cement tile accent wall. (I wanted a plant wall)

because the ceiling is vaulted, I wavered going all the way up. I thought it would have looked odd against the black tile (and that is all the tile I could get. I used every single piece)

So I chose tile to the ceiling on the one side, and just continue the same all the way around
an no, I don't have any glass or doors!

this is a 4x12 tile in a stacked layout. the tile has a slightly wavy look to it similar to yours

I consider something like this, rather than the one you have. With the edges on yours, you might have more grout showing.

You could do one full wall in your plaid, and the penny on the floor.

or, the plaid on the floor and the penny in a niche.

or the penny on the outside of the bathroom floor, or vice versa.

lots of ways to use the tile.

Bathroom is roughly 7x12 with 10 1/2 foot ceilings throughout

I'd go all the way to the ceiling with the shower tiles.

btw, whatever this dark wood tile is underneath, I like it. gives all that blue/white/gray some depth

if you do that dark wood tile floor, then I'd do a white vanity w/a marble or Super white

if you don't use a dark floor, then a very natural white oak vanity

or something in a blue gray would look nice

Thank you for all of your comments. This has been quite a daunting task trying to decide on materials as this is not a traditional size bathroom.

The plaid is definitely going on the bathroom floor. Someone suggested a blue vanity but it’s hard to purchase online (like Wayfair) in case the blue isn‘t what we expected.

True, in that case stick w/the white, do the marble or quartz top, and try and bring in some warm, wood shelves, maybe some greenery, or a teak stool, something to give it a bit of warmth. otherwise it's going to be visually very 'cool'.

BM Calm is nice paint choice for walls,

and BM Oxford White for the white trim. (it's a white that has a very slight gray undertone, no yellow)

or, if you want something darker, go w/a navy or one of the blue tones in the tile

Thank you so much. Has anyone ever seen this floor in a remodel? I believe it’s relatively new? Also, thoughts on white grout in shower? We’ve heard it will eventually change color because of age, hard water etc. My husband was reluctant on subway in the shower as it’s such an expansive shower and didn’t want it to look like a locker room. But after searching for weeks, it seems that it’s the way to go with that plaid floor. Thoughts?

I like what you've chosen, but as I've stated, go larger w/the subway tile and don't pick one w/uneven edges. even w/my shower and the small grout lines, I still have to scrub.

I used Mapei Flexcolor CQ grout in Warm gray. I think it would be a perfect choice w/your tile.

here's a close up of it

the grout is stain proof and has held up rather well.

Beth, your bathroom is beautiful. Do you find the water splashes out of the shower with no doors? I don’t think we would be able to do that with our floor plan the shower is going in to the right of this picture.