Hi Shmoo - A photo of the actual space would really help. But a few ideas in any case...

If you're trying to figure out how high to go with the tiles is there anything else in the room to suggest the height? eg the top of the door, the top of the shower stall? If you keep to a horizontal level across different design elements that can help make things look right.

The other way of looking at it might be to think of the tiling as framing your mirrors or cabinets with an equal amount of tile all the way round? I'm not at all sure about this suggestion - no idea if it would work without a photo.

Also, have you considered putting your tile in from the floor up to about 4ft high? That would give you the splash of color it sounds like you're looking for.

Hope that helps.

Megx

you can use translucent light bulbs in the washroom area to give it a fancy look.

Tile to the edge of each counter, and to the bottom of each medicine cabinet, on both sides, north and south. It's a backsplash in that scenario..........

Or it's a backdrop accent wall : do the same thing, and YES............to the ceiling. It's one or the other,

There isn't a good "In between, and stopping the top edge of the med cabinet is definitely not a great idea

A strip of tile floor to ceiling the width of each vanity.

I agree with Jan and you should just think of it as a water-preventing backsplash. Too much tile otherwise.

Thank you all. I don’t have a photo because it isn’t built yet. And I understand/agree with both solutions, either all the way to the ceiling or just a sink splash protector. If we ever get it finished I’ll post photos prior.