Unicorn; >26' with a slide and corner shower?

We'll I did find one!

21sb toy hauler genesis

Years ago, we were in the market for the same exact thing.
We went to the RV show but every "26" model we looked at and liked was actually 32~34" long! Never did find one.
We only have one kid with us so we decided against the bunks and that gave us a lot more choices. We ended up with a 26' Wildcat that we enjoyed for the next 13 years.
With our latest trailer, we made sure it had a true hide-a-bed so my son has a place to sleep that we don't have to make up every night.

I wish you better luck than we had finding a unicorn!

Cheers,
Scott