I've worked out all the details of my upcoming master bathroom remodel - except the floor tile. Two big questions: Porcelain or marble? Mosaic or larger scale tiles?

I'm using a carrara marble countertop instead, so I don't want to do faux-marble floor tiles or large real marble tiles. I'm considering mosaics - porcelain or marble.

Here are the four samples I'm considering, but I'm open to other ideas.

1) White porcelain octagon with gray dots

2) White carrara marble hexagon

3) White carrara octagon with gray dots

4) White carrara basketweave tile

(Also halfway considering this paint color, F&B Borrowed Light)

Considerations:

-How delicate and fussy is marble tile? I don't mind patina (hence the choice of a marble countertop) but I want to be able to scrub the floors clean without much fuss.

-Will all the grout lines of mosaic tile be a nightmare? I would use white grout with the porcelain tiles, but light gray grout with the marble tiles.

-Is there a larger-scale porcelain tile that I should consider in this design that is easier to clean and maintain?

(The paint is Farrow & Ball Peignoir, the fixtures are Rohl polished nickel, the tub is Victoria & Albert white, the shower is frameless glass with white grout and the same floor tile as the main floor.)

My home is decorated in a French country style with some antiques. I want the bathroom to fit with the general style and still look good in 20 years. Here is my entry, for an idea of the style.

Thanks to anyone who took the time to read all this!