Have you thought about a dishdrawer? Afaik, they are still 600mm wide (same as most d/w's) but can be set lower or higher than regular bench height.
They can be…

Three options:
1. You could get a freestanding 600mm dishwasher and place it somewhere in the kitchen that works.
2. If that stack of drawers is 450mm wide, then you could take…