If the bathroom is large enough.

The tub is in a small room by its self. The floor has 8x8 tiles in brick pattern. I was thinking of using same 8x8 tiles and maybe in the middle do some pencil boarder to break up the look of the larger tiles. The tile does not come in a smaller size.What do you think?

8x8 are okay to use, more and more you see larger tile with nice coordinating borders

Thanks for both comments.