I guess number six if it’s from the same manufacturer. I don’t love basketweave or octagon on walls, they always look like floor tiles to me.

Thank you for your feedback!!

I am wondering now if I should just go without mosaic at all to keep it simple. I love the look of a marble mosaic, but I have been concerned about what I have been reading. Some say that they regret marble due to maintenance, staining and upkeep. Doing an entire wall or a larger area in marble is making me nervous. I didn't want it to be boring, but maybe it doesn't really need it. I can always add color with decoration.

I never like accent stripes with marble so can't help there .BTW we stay in a small hotel in Rome it has cararra marble floors all the walls in the bahroom and in the shower . All that marble was installed in the late 40s still loks awesome Marble has been used for avery long time in kitchens and batrooms I do like it when it is the only star in the space so both bathroom flors and shower walls same 12 x24 tile for both .also layed in the same pattern

I don't think you'll regret leaving out an accent. I hate to open this can of worms because for some reason people have very strong feelings about niches, but if you were planning on having a niche you can put an accent tile in the niche. Same material as walls, different size and/or shape keeps it subtle. Sometimes people put whatever is on the floor of the shower in the niche. That being said, constrasting niches aren't as popular as they used to be. But it's your bathroom, your money - do whatever you think will make you happy. :-)

Bathtub/Shower Combo with Tiled Niche · More Info

Don’t use an accent. Not needed

We recently did a curbless shower and used the same marble mosaic for both the floor and the shower niche:

Beauty and the Baths: Primary Bath · More Info

Beauty and the Baths: Primary Bath · More Info