I love the Europeans with their laundry appliances in the kitchen. Makes perfect sense, all the plumbing is there and it saves having another room just for cleaning your clothes.
I have been to many apartments and small terraces where the laundry is behind a cupboard door in the bathroom. Or behind sliding doors in the hall way.
This great idea uses the same amount of space as a single shower cubicle.
Here is one that uses the kitchen's idea of hiding the fridge in a cupboard but hides the washing machine.
Using the kitchen cabinet to hide the washing machine is also a great idea when space poor.