There's no right or wrong, just what appeals to you. I slightly favor a large-format tile for bathroom floors (not for a shower floor, which needs a lot of grout lines for extra traction), and have put 12x24" tiles in smaller bathrooms than yours, to great effect. Just make sure whatever tile you pick is rated for damp floors.

There is no "best" size of a single tile . You have two baths with a shower. What is on the shower walls.. What then on the shower floor? What is on the floor? In a small bath, repetition of a wall tile on the bathroom floor can be nice, creating unity. Or the use of a mosaic 2 inch on the floor and a repeat of that on a shower floor. But nobody can help if you have no idea the look and feel you want in either bath.

Tip? This what professional designers do : ) But even they would need to know what you are after in style.

I was going to go with a 24"x24" on both the floors and walls for the guest bath (Crowne White RT made in Spain), with a 2"x2" mosaic on the floor. It's the tile below. The vanity is Chantilly Lace. Below is the picture.

I'm still undecided on the master bathroom as I can't seem to find the color I want. I would like a marble looking porcelain with a hint of brown to pull in the hardwood transition.

You can't do 2'x2' tile in a room that's only 6+ feet wide. You'll end up with too few grout lines, which will look weird. And you'll have to deal with the extra 3" and 6" in each, and that means a lot of waste tile in order to not have weird little slivers against the walls.

Oversized tiles are for big rooms.

A two foot tile is too big, even laid on a 45 * angle.

As to the master. you need no brown "to pull in the hardwood" . Hardwood in a hall or a master bedroom is a neutral element, unless orange oak

Rather than the overwhelmed statement of just "going with, and calling it a day", consider hiring at least a one or two day consult with a designer to refine/edit/help select /consider your ideas ..........and ensure a decent result.

At the very least, make an idea book of baths you love on Houzz.......and you will get some help. But we don't read minds. Provide photos of any selections already made, such as vanities.... plumbing fixtures etc

I don’t like square tiles and much prefer 12 x 24” and I do not agree that large tile are for large spaces . I use them often in small bathrooms to keep grout to a min. I also would use the same tile on the shower walls

Jan - I have hired a designer and she's the one that selected the larger square tiles. As a matter of fact she was trying to get me to go with 30"x30" for both bathrooms. I have also done a mock up of what the 24"x24" tiles would look like. I've included the vanities as these will be custom built. Does this look awkward? Thx

Patricia - Below is a mock up of rectangular tiles of 16"x 32" because I had that option as well. They end up working on the floor and front wall, but then I basically have square tiles on my left and right walls in order to keep everything symmetric.

I feel that it depends who you ask. (1) my designer is telling me to go with square tiles and the larger the better with minimal grout lines (2) tile stores are telling me to first pick a tile I like and an experienced installer will figure the best layout based on available sizes, (3) Houzz is telling me that large 2x2 square tiles are too large for a 6x6 bathroom.

I am with Patricia on this. I left a couple words out: LARGE SQUARE. I can think of nothing more boring on the floor, and I don't love it on a shower wall either.

As to the vanity? I would change the very top drawers and apron to a slab front. Too small/shallow for the detail.

As to what "everyone" is telling you to do: Upload a few pictures of baths you love. None of us knows what you like or want. Maybe you don't either. But the incessant worry and commentary on EEKS, GROUT LINES, ( Houzz) is absurd. A well ventilated bath, with normal/very regular cleaning routines makes this a big worry over nothing.

My daughter’s bathroom is 61” wide by 76” long plus a tub alcove. She used 24”x24” tiles on her floor and 12x24” on the tub alcove walls.

I personally love the look and will be using the same size tiles in my upcoming hall bath remodel. I’ve posted these pictures quite a few times before but since they might help you visualize what the 24” square tiles would look like in a similar size bathroom, here they are again:

Before grout

badgergal: Your daughter's bathroom is an example of what is wrong with using large square tiles in a small space. See that skinny row of tiles on the far wall? That's wrong. You should never end up with skinny slivers of tile like that. The tile guy didn't plan that well. If he'd done it correctly he would have had adjusted the layout. OTOH, that would have required more tiles and cost some more. And OTOH, it's a bathroom, so....

First, the short answer: Your bathrooms are not large -- you must keep your tile proportionate to the size of the rooms. I would stick to tiles in a modest size. 6x6s perhaps. No larger than 12x12s. You might use taller tiles on the walls ... maybe 12-18" tall on the shower walls, but keep to 6" wide.

I would like a marble looking porcelain with a hint of brown to pull in the hardwood transition.

If you want a marble look, this is the best choice. Porcelain is so much tougher and easier to maintain -- not to mention cheaper. I also like that you're looking beyond the bathroom /looking to connect to the brown in the adjacent flooring.

You're talking about tile size ... but don't neglect layout too. This staggered tile pattern adds something to the floor. Simple but striking, it's definitely "one step beyond" thinking. I also like tile laid out in "pinwheel style", and squares can be laid out in a diamond pattern:

These layouts do increase your labor costs, but they look great in the long run.

I hate your drawer storage. Hate it. With duplicate sinks, you're short on storage anyway -- if you downsize to one sink, you can each have a wide drawer stack. I know each of these drawer stacks is 12" wide, and that sounds good, but by the time you account for the hardware, you're only going to get about 8" of storage in each drawer. In contrast, if you go with one 24" wide drawer stack, you need only one set of hardware ... and you'll have about 20" of useful space inside the drawer.

Houzz is telling me that large 2x2 square tiles are too large for a 6x6 bathroom.

I agree with Houzz.

See that skinny row of tiles on the far wall? That's wrong. You should never end up with skinny slivers of tile like that. The tile guy didn't plan that well.

Yes, the tile looks unbalanced.

Before grout

Wow, grout makes such a difference.

I really love this bathroom. It's a moasic floor with what looks like a 12x24 border and wall tile. This gets me away from trying to fit a large tile in a small bathroom and gives me a real elegant design. Now this is all marble I would assume. Is it foolish to try to put marble in an area where there is constant water? I know we would have to seal it once a year, but over time will it lose its lustre?

It's a moasic floor with what looks like a 12x24 border and wall tile.

In theory I like it, but don't you have only 6' of width total? Imagine this in that width.

Is it foolish to try to put marble in an area where there is constant water?

Google all the threads on this site that discuss stains and other problems with real marble.

I have something similar in my powder room with a border and it looks fine so not sure why it wouldn't work for the other bathroom? The powder room is only 5'x4' and I plan to put it in a 6x6 space.

As for the debate between marble and porcelain, if I go with a mosaic it would need to be marble. Just asking if that could have staining problems in the longrun. I've never had an issue with my powder room, albeit it's not used often.

I have something similar in my powder room with a border and it looks fine so not sure why it wouldn't work for the other bathroom? The powder room is only 5'x4' and I plan to put it in a 6x6 space.

That border is much more narrow. I like it, and it's proportional to the small room. The larger tile in the all-white room is larger and proportional to the larger room.

As for the debate between marble and porcelain, if I go with a mosaic it would need to be marble. Just asking if that could have staining problems in the longrun. I've never had an issue with my powder room, albeit it's not used often.

So you've decided. Good.

No I really haven’t decided. I see marble in a lot of bathrooms. They have created sealers that seem to provide good protection. What would you go with?

It depends on your family. Do you have little boys who will miss the toilet? Do you have elders who might dribble on the way to the toilet after sleeping the night through? Do you plan on puppies or dogs that might become old? Urine etches marble. Do you use fingernail polish remover or other things that can harm the finish on marble? Do you think you will be able to say, "I love the patina on this marble floor, the etching is just part of the charm?" If you can live with it, get the marble.

In no way are you limited to marble just because you are using a mosaic.

Sealers do not protect against etching.