OP, you can load the photos here in the comment section since the pics don't show up in your original post.

Ooops! I see they show now. Thank you.

Would you consider painting the cabinets and mirror frame white? I like your current blue, calming and serene. A little less brown will help move toward that spa feeling you're trying to achieve.

[https://www.houzz.com/photos/contemporary-spa-inspired-bath-contemporary-bathroom-los-angeles-phvw-vp~51901965[(https://www.houzz.com/photos/contemporary-spa-inspired-bath-contemporary-bathroom-los-angeles-phvw-vp~51901965)

Add lots of white fluffy towels and soften your vanity top with a floral arrangement (similar to what is in the insp pic). Remove the clock. Darken the frame around your mirror. Bring in some art for the large empty space above the towel bar. It can be a small-ish piece with large white mat around the art. Local photos are always nice or something that has meaning to you. Accessories are what finishes the spa feeling IMO.

It’s not the blue that’s the issue with spa like. It’s the red of the wood and the tile. I think a lighter grayer, lessgreen color could work. But the red is always going to be a problem with “spa” as the goal.

But the reds and some greens and browns could work to be a more “nature inspired zen”. Think of a redwood forest and channel those layered greens and red browns. Rocks and stones.