That does look bad. I'm sorry that happened to you. If you have leftover pieces of the backsplash tile, take them to a tile store (better than a big box store if there is one within driving distance of you). Look for a solid color tile the same color as one of the backsplash pieces and do both the floor and shower in 12" X 24" tile. The shower floor can be a smaller format as usually that works better with a drain. That way the backsplash is the star. Probably a white vanity will work. Gray is not as popular anymore, but that's an option if you like it. It might be harder to find one in the right shade of gray than it is to find a white one that will work.

Is the shower tile also going to be demolished? So you are down to bare studs? I would go with pure white tile everywhere. Large scale white in the shower. Small on the shower floor. Keep it simple. Modern. Nothing with any movement. A white vanity. White fixtures. Classic.

Thanks! The shower tile will be demoed as well because of mold. Everything but the gray backsplash behind the sink will be demolished.

There is so many directions you can go with this. You def need to get to a tile store. The tile you had in the previous shower looks to be a large format porcelain - on my monitor, it has a creamier background. You would need to get a bright white background or maybe do a cool concrete look. You could do the walls and the floors the same tile so the deco tile behind the mirrors will be the focus.

Good luck!

I like 12 x24 plain colored porcealin tile for both bathroom floors and shower walls and for sure in this case since anything else will not work with the backsplash