make sure you use non-slip tiles on the floor and if needed, add a floor warmer underneath the tiles. now is the time to think of everything.

Not doing it myself. Thanks for the advice

I agree, you can use various tiles sizes on the walls and floors. You can even use some of the wall tile on the floor to create an interesting floor pattern. As for the frameless sliding shower door, that doesn't exist. It has to have a frame to slide on. Shower doors can be ordered from you local glass companies. They'll be able to help you with a sliding door with the least amount of the hardware.

I recently saw a frameless sliding glass door for $199 at Costco. Honestly I'm not sure if it was for a tub situation or a full size shower. Sorry but just a suggestion.

correction, maybe it wasn't totally frameless but seemed really nice.

I like your tile combo! If you do a niche for shampoo and such, you can put the accent tile in there are well.

Thank you for all great suggestions!! I love this site!!! Any other ideas for 24 inch vanity and top?

Also, what are your thoughts on shower doors. Many people say they hate them and are hard to keep clean. They say shower curtain is the way to go. I like all the pictures on Houzz that have shower doors but want to be realistic.

Boy was I off. Here's a link to the Costco tub door product. It's approx $300 and looks really nice. Sorry it wasn't what you need but perhaps someone else...
http://costcocouple.com/ove-decors-60-inch-premium-rolling-tub-door/

Any paint color ideas with this tile? No windows and very small space

anything taupe, like Benjamin Moore's OC-11, clay beige would look nice

Or, if you add an accent tile/stone, you could pick up a color in it. I absolutely agree with the heated mat under the stone on the floor. They come with a thermostat...