Hi Daughter has a 3rd floor appartment (probably not relevant) and in her kitchen she has a built-in washer/dryer (with a cupboard door over the front). The dryer part has never really worked - it seems to get everything hot and steamy, but not dry. The washer part make strange clunky noises and yesterday needed a lot of cajoling to make it release the door. So, it's time for a new one.
Is there a real important reason why a freestanding unit cannot be stuffed into a 600mm wide gap as if it were a built-in version? Yes the door may not fit, and yes the plinth will need trimming. But otherwise? Ta.