The tile is vinyl...she can't paint the "grout". To me wall color reads a little too much on the blue side, it needs more of a yellow undertone to go with your tub & vanity top. I think the clean white can work for trim and vanity, but only if you bring in more of the creamy/tan colors. I'd just stick with a fairly monochromatic theme-no prints because then you're really stuck with a 'theme'. You can bring in a print with wall art. I'd go more with texture than print, however. In our main bath reno, we have the same tub configuration. We put in white/gray marble tiles with a light grout. The tiles have a touch of tan in them also. I went with a blue wall color-reminiscent of beach glass, and all white trim. We put up beadboard on the ceiling where there used to be a flurescent light tube box built in. I used brush silver accessories and bright white towels. For the shower curtain I chose a shimmery blue one from Ikea. I don't have a 'theme' other than ahhhhh=it's just very calming to walk in there. I do have a stone Buddha and a couple of small shadow boxes of Asian coins. In any case, I'd definitely get a different shower curtain-that one just does not work with your floor.

Where would the striped tile go? I say let the terrazzo be the star and do everything else in a “boring” coordinated solid. Terrazzo is what I REALLY wanted in my bathrooms, but wasn’t able to find something that would work, so I really look forward to you sharing pictures.

Thank you @J Sk My Anthropologie rug isn't all that great in the room. It did inspire pink for the room though. I like your rose wave rug a lot. I think I'm going with SW Faint Coral. Almost exactly the same as Intimate White but more a touch more grey undertone. It's more of a beach vibe than my other selections.

Is the tile there now in good shape? What type of tile is it? What color? What color do you plan tp paint the tile? How often does the shower get used and by how many people? How good it looks will depend on the state of the current tile and grout. If it is is poor shape with mildew in the grout, expect it to look similar in short order. If all in good shape and the tile cleaned well, primed correctly with a bonding primer it may last 6 months and it may last years. No true way to tell.