Operation is simple - the fineness can be controlled by turning the hopper and the power button is - visible as in the picture - mounted within easy reach on the right side. To date, I have never managed to press it accidentally.
Cleaning is also problem. Just a handful of purely give rice to fine and that should be enough. Or who wants to be able to expand also hopper and upper millstone and dry clean with a brush.
It is of course correspondingly heavy and I have to agree that for occasional use perhaps another model would be useful, because it is certainly not as easy to stow away again. But who often used and has the room for it, the beautiful device must not hide.
I'm super happy and she would always buy again, it is worth every euro of not quite inconsiderable price.