Even though I love the way the hex tile looks, with kids and durability being an issue, I'd pick a larger scale rectified tile (I think that's what it's called), meant for tiny little grout lines. I'd pick a medium tone tile with matching grout so it wouldn't look dirty, and there would be much less grout. Personally, I wouldn't put wood flooring into a small bathroom with little kids. I'd stick with tile.

More info on the tile....in the questions for that photo, they say the tile is Puka Iridescent. I had a feeling that Puka was Sonoma Tilemakers but I couldn't check last night. So I have found it in their Vihara line of glass tiles. I actually like their Silk colors better than their Iridescent colors as an iridescent has other colors that probably won't work with your cream and brown granite. I had samples of Oceanside glass tiles in the polished, matte, and iridescent tiles, and just a touch of the iridescent wouldn't be bad in a custom mix. They have many colors, shapes, and sizes like Vihara. Your problem will be that you only need one or two sheets of tile for your backsplash and many places have minimum orders. https://sonomatilemakers.com/vihara/

I like 12 x24 tile on the floor and the shower walls espcially in small bathrooms

I'm looking at some flooring for a small (5'x5') powder room. I found a color that I really like but I don't know about the whole loose lay tile thing (https://www.vroomancarpet.com/index.php?id=335)). I was also looking at a more standard click lvt but I'm not as excited about it. Is one significantly better than the other? Also I'm installing a cabinet vanity in the room (because the water pipes come from the floor) and I believe from everything I read I need to install that BEFORE the lvt. Also if anyone has ideas for a decent place to find a cabinet vanity (24-27") that would be great - I'm not too thrilled with what I've found at the big box stores, but my time is limited for finishing this product. I'm tempted to drive up to Denver and see if they have any stores with other options.