Thanks. The space is 72 inches wide, so I've had a hard time finding a bench that doesn't have too much awkward space on either side.

Store the toys in low storage along that upper portion of the hallway instead. I don't think anything should be placed in the middle of the stairway, and especially not toys. They should be stored near the areas where they can be played with.

I don't know if you liked the bench I suggested, but it's 68" wide.

https://www.potterybarn.com/products/wade-wood-drawers-bench/

At this stage in your family & needing toy storage, have you considered the cube type cabinet pieces from IKEA with pullout drawer baskets? I found those to be a lifesaver when my kids were small & a great way to keep toys organized. I even labeled the drawers so that as they learned to read, they also learned which toys went to which drawers. It made it easier when it came to picking up (& finding) toys. Above the cube shelving, I could see a fun collage on the wall with favorite family photos, & artwork mixed in a way you like. The key on such a large wall is not using tiny photos & artwork but going a bit larger. Make sure to secure cube shelving to the wall (especially if you have climbers!). Then, you could put a couple live plants in the space. Maybe 1 or 2 on top of the shelving and then a large taller one to one side. Or, faux plants if live plants aren't your thing. I love live plants in a home though. :-) The natural light coming in is fantastic!

Even if you add some storage, just one toy left out (noticed the toy cars on the ground) it’s an accident ready to happen. Can you place the toys elsewhere/where they play?

Then decorate the lovely staircase.