A noce should work well -- Since it's the floor, it'll tend to visually fade into the background and won't actually need to match exactly. But if you're picky about matching, you'll get more color-control plus a more bullet-proof tile in a porcelain look-alike.

There is no real rule. You do want them to coordinate with one another in terms of relating to the overall look of the bathroom. But they can coordinate while being different materials (porcelain on the walls versus natural stone on the floor), different sizes (subways on the wall versus squares on the floor), and different patterns (running bond on the walls versus diagonal on the floor). The above is simply an example. Much of it can depend on the size of the room and the amount of tile to be used. Using the same tile everywhere in a large bathroom could look a bit too monochromatic and uninteresting. There would be no change in material or pattern to draw the eye from detail to detail as you look around the room. In modern or contemporary design that might be desirable; a slick, clean, uncluttered look. In a more traditional design it might simply be boring. Large format tile always lends itself well in modern styles. Mosaic can be implemented for a period look. Mosaic is busy given the many individual tiles, But it can be made to look "detailed and busy" by using a contrasting grout color. It can be made to look cleaner and slicker by using a grout color the same color as the tile. So there is no real right or wrong as a whole. Sometimes anything and everything can work, but often it's how it is implemented into the design. But you need a starting point. A design style, for example. Having an idea of what look you are trying to achieve will lead you through the selection process; tile material, tile color, tile size, layout pattern, grout color.

Writersblock- I love those 20s bathrooms! Our other bathroom is very true to the time- subways and hex. Matter of fact we just copied what had been there. I was sad to remove the original tile, which was amazing and thick, but unfortunately the owners before us didn't take good care of things and there was massive water damage. as for lighting, we also have two recessed lights in there and a window, do you think that will provide enough light? The bathroom not including the shower area is 6'x7'. We could also make the fan into a combo light and fan. I'm also a bit worried about lighting because sconce placement has to be above the mirrors and not next to them, which I think is what most people agree is the best placement.

@Lauren E The wall tile/tub do match each other, I've attached more of close up pics. To me, they are a cream/almond/ beige. (maybe slightly pink?). t's currently painted a khaki color. The vanity top is slighly pinkish and the floors are travertine. The lighting is awful - no natural light.