What a bathroom! What a neat tub and sink! Is this a vacation home or permanent? I'm not sure it matters but it would work better for a vacation home (psychologically anyway), but what about doing the tub/shower plumbing like an old clawfoot with shower added? Full surround shower curtain (or just two sides if you want to redo the tile nice and watertight I guess) with the showerhead piped openly from the lower plumbing and attached to the curtain rod? Wrong terms, I know, but maybe you know what I mean. LIke the one linked below (cheaper versions and different configurations are available--this was just a quick google.) I'd guess there used to be a thicker floor that was removed and nobody bothered to tell the toilet. If you're really being cheap, you could maybe get away with a lot of paint on the cabinets and curtains over the missing doors, but the cabinets would have to be sturdy enough to keep for that to work. Crisp white tile is inexpensive and you CAN put tile on a piece of plywood for the removable countertop. It'll be heavy enough you won't need to anchor it. Maybe you can DIY drywalling the ceiling. It's not a fun job, but it's a good bonding experience with whatever friends you can get to help. :) Here is a link that might be useful: example of ceiling mount shower curtain/tub-to-shower conversion

So I chose not to take a before photo of mine because it was the floor around my boys’ toilet. So yeah you can imagine. Here is the after photo though. Like it never happened!

Maybe this houzz quote suggests a gray not too cool, or too warm: "select a trim color - if painting walls a cool color (greens, blues, purples or grays), find a white that reads cooler. Put swatches of white paints next to one another and see how they compare; some will appear more warm or beige-like, and others very light gray with hints of green, blue or purple."

" light grout that is impossible to keep clean " A bath used by males is best with epoxy grout. The Pro tiler needs to have experience using this type of grout. I have it in my baths...it is impervious to any stain / dirt.