You need to do the narrow side of the wall/bench. But you can paint the back where the tp is.

Do you think the shower wall tile will look good on the narrow side of the bench?

I know that a more modern look would be to wrap the grey tile around on both sides and add the quartz to the top of the pony wall but can't help but think this could get visually heavy with the grey tile, which is very nice and great job installing BTW! If you are going with a quartz similar to your flooring it could be interesting to wrap the pony and bench wall in a white modern stacked style installed vertically. It would depend on what color your vanity is, and shower floor tile as well? I think not wrapping tile around the pony wall (both sides) could possibly look unfinished ending on a shorter portion of the wall. Like the idea of quartz on top of the pony wall.

That’s my shower with different tile. I agree with paint on the room side in this case. Make sure the edges of the quartz are eased a bit to prevent chips.

Usually when using quartz you need to buy a slab? And I'd think you would use the entire slab....

But if you aren't then I would definitely tile the both sides of the pony wall. Pretty tile

I would tile both sides of pony wall. Add quartz on top and down the narrow front depth. If you have enough quartz, you could cover the entire pony wall top, front and both sides.

Don't tile the pony wall where the toilet paper is. That is its own little space, separate from the shower.

I agree not to tile the toilet side of the pony wall and definitely tile the bench to match the walls. The toilet area is part of the main room.

I agree the toilet area side is a separate side , but the pony wall is the same structure. Both entities also are open to each other and structurally part of the same space.

I like adding materials to make a statement and give a little punch.

But that side Of the pony wall is not part of the shower. There is enough statement going on. Tiling the toilet side is a digression.

Thank you so much for all of your replies. I don't think I am going to tile the back of the pony wall. Right now this looks like a lot of tile! Getting there

I'm not sure but to me it feels like it is unfinished.

If you look at shower pony walls on Houzz, the majority are tiled on the backside. But not all. Here is one example where there is an overhang and not tiled by the toilet.

Plymouth House · More Info