The apartment we bought came with an old 18” dishwasher.
We run it daily with two adults and it works great. Even though you need to run it more often, it’s takes less time to empty than a full size.
For our current layout it makes a lot of sense but would want a full size if the family grows.
If I was single I would prefer the smaller format. I find it kinda nasty to have my dirty dishes standing for many days.
Reminds me of this OpenSCAD design: https://www.thingiverse.com/thing:281520