I agree that wallpaper would be amazing! Maybe I can convince him if I found one that he liked. I think he is afraid of taking it down, if we ever want to. I think he has heard of too many horror stories in his real estate career. I know there are removable wallpapers, and better wallpapers out there. Cute dog wallpaper! That is a much better “yellow”/gold than the one he chose!

I’ve done a lot of wallpapering and bathrooms are the worse due to the numerous precision cuts required. If doing yourself and not experienced, suggest just doing the large wall. I just helped someone with one wall and it was impactful. Paint the other walls the same color as the wallpaper’s background. Peel and stick is easier and can be slightly adjusted if necessary and being washable is a good option also. . The company below provides samples and has lots of beautiful choices. If only doing one wall, you’ll save quite a bit of money and repeate pattern won’t be as much of an issue. https://uswalldecor.com/collections/botanical-and-floral-wallpaper?page=4 Hope you don’t mind me saying, but the towel rack next to sink feels a bit awkward. Consider a round ring (lowered) or nothing, since the large towel rack is so handy (suggest brass to feel more complimentary).

how much of a pop? do you want color? or do you want white? what about this color? (it would go on your walls. just showing you how it looks next to marble) any chance you could do a diff mirror? you have the beautiful marble countertop and a mirror from 1980! (complete w/the little tab things!) like this. look at how much better it looks (don't know if you can swing some sconces, but that would look even better) a type of backlit mirror would also look great any chance you could tile behind the vanity and get a diff mirror? or maybe frame out the one you have? and I love this piece of wood spanning underneath. bring in baskets or extra towels on them. the warm wood offsets the cool marble tones. this would look beautiful. a soft blue gray subway tile and a square mirror (you could do a silver color to go w/your light) Or, go with a medium gray color for the walls, and a smaller mirror. get a vase or something for the corner if you frame out your mirror, do a darker wood stain to match your floors

Agree with others to keep any changes simple and inexpensive. I love the yellow tiles myself, but the lookers/buyers in our gray mod world probably won’t, and might end up gutting it all. The new sink and lights are beautiful and charming, love the idea of them in there (I’m so sick of generic modern ’updates’), but much too unique and taste specific for resell. Keep it calm and cohesive. You want them to imagine the potential regarding their own taste. Neutral paint, new sink, new faucet, and different window treatment or leave window bare is all I’d do. A clean blank slate with minor necessary updates is usually most desirable to potential buyers … as well as not be a waste of money and time for you. It doesn’t need to be ”fun”, or a design statement, it just needs to appeal to the masses.