Hi, trying again with more info and better questions.

I need guidance around shower and floor tile for a very small bathroom. We have a tub/shower combo and plan to do plain white subway tiles up to the ceiling. I am not going for trendy, so should I just do 3x6 tiles? They would just be on the wall, not the tub surround. Should I go a bit bigger?

I am really stuck on the floor. The floor space is 4' x 5.5' (not counting the tub) and we will have a 30" wide vanity. While I visually like the idea of small hex, penny tile, or something like that, I am concerned about having that much grout. If I do a larger format tile, should I do rectangular? Should the proportions be the same as the shower tile (not the size, but the proportions)? Or would something like the pictures below look good?

The vanity is a warm medium blue, the walls will be a warm light blue, and the fixtures will be ORB. Our house is an American 4-square that is around 110 years old. Almost all of the walls are painted BM Snowfall White (including the hallway outside the bathroom), and the color scheme is warm blues, rust, and green. The carpet runner just outside the bathroom is a warm med-dark blue, textured but not patterned.