I would only be open to option 1. Bathroom floors are slippery, I'm clumsy, and larger tiles are like a death trap for me. YMMV.

@JP L Thanks. Do you suggest a smaller hex than the gray one above? Tile is for the outside bathroom floor and not shower floor.

Also would a white small hex with dark gray grout look better than the gray hex?

That's really a personal preference. Contrasting grout and smaller tiles will increase the visibility of grout lines - it will introduce more pattern in the space, which can read as "busy." If you prefer a more tranquil/simple space, I'd stick to minimizing the visibility of grout lines - either through matching them in color to the tile used, or picking larger tiles.

Entirely personal opinion, but I default to smaller mosaic tile floors in my own bathrooms - grout choice varies. Disclaimer - I outsource cleaning duties. I also avoid large format tiles on walls (they aren't really my style) but others love them, so again - personal preference.

Again, just my opinion, but I'd probably do a smaller gray hex (like 2 inch) with matching grey grout.

My only recommendation if you go with a marble and white/grey color scheme with your tile is to pursue color and warmth via other finishes - avoid sticking purely to white or grey everything. Pick a wood vanity, or a painted one with color. Otherwise, these baths have a tendency to look like mausoleums to me.

The color of the grout you use on the walls, it should continue onto the floor so its connects both colors and is seamless.

I disagree. You can totally use two different colors of grout in a space - especially if the tiles themselves are different colors. I've done this multiple times with good results.

I'm Getting ready to renovate two bathrooms in a small house. One will be a master and one will be a guest bathroom, both upstairs. I'm thinking of using similar tiles and vanities in the two bathrooms, but not identical. So if you're really going around in circles, maybe one bathroom has a gray vantity, and the other one has the white vanity. Both of them can have the marble countertops (Did you mention countertops in your question, Or is the marble for the walls?), and then the larger bathroom would have the larger tiles and the smaller bathroom would have smaller tiles. At least consider the smaller tiles in the shower. The extra Grout helps with reducing slipperiness. If you use the white hex tiles, make sure the white is the correct white that goes with the marble countertops. You might take a lot of the gray tiles and arrange them around the marble to see if you want that much gray on the floor. In any event, my suggestion is to mix up those variations that you like.

@8TH AVE INTERIOR DESIGN LLC Thanks. Good point on the grout color. The hex is not for the shower floor, but for the outside bathroom floor. Both baths have tubs. I updated my initial question as it was not clear where the hex was going.

For the master, I will keep in mind that the shower floor needs to be 2" or smaller tiles.

@JP L Thanks.

The hex is for the outside bathroom floor (not shower). Do you think a 2" gray would be better that the one I have for outside bathroom floors? I like " tranquil/simple space" so may go with a similar color grout.

Good point on color. I don't like the all white baths. Just seems cold to me. I was thinking of painting the walls in sea salt to add color. Or could go with a navy vanity.

@Andee Thanks. Very good point on mixing the variations I like in the two baths. Bathtubs in both the upstairs baths so no shower floor tile.

Also thanks for mentioning white tile and contertop white match. Did not think about that. So gray tile for the floor maybe a better choice. White is hard to keep clean anyway.

The marbly tiles I have are for the walls.

Three years ago we moved into a house with a white tile floor in the secondary bath. White is timeless, but it does show every hair and speck of dirt which I find annoying. When we remodeled the master bath we chose a gray floor, a Carrara marble topped white vanity, 2" hex on the shower floor in varying shades of gray with white oversized subway on the shower walls. I painted the walls a very light green and have darker green towels which is enough color for me. I love SW Sea Salt. That would be a good choice too. I like that white and gray are versatile - a lot of different wall colors work with it. So I like your Option 1.

@kandrewspa Thanks.

Do you remember the name of the gray tile you used on your floor?

Sorry, no. It was about two years ago when we bought it. I used 12 X 24, not hex. It is a medium gray porcelain that resembles slate. The grout I used is a little lighter than the tile.