Oven and microwave are installed in a cabinet on top of each other, the oven slightly below his working height and the microwave above it. A counter with knee space under it is located adjacent to the oven and microwave.
The oven has a door that opens downwards, the microwave has a side-hinged door.
Stacking the oven and microwave saves space. This solution works well for the user. He puts things on the open oven door.
This tip is from 2011