Anne, in our last house the laundry was right between the girls' bedrooms, so I totally know what you mean. When they were old enough to reach the bottom of the drum, I taught them to do their own laundry and of course they'd do their own laundry right at bedtime. They told me that they found the sound of the washer/dryer soothing. LOL. I don't think so.
In this place, the building is built like a rock, with thick walls. And we did swap out the hollow doors with solid core, which helps too. When laundry is running we can't hear it as long as our bedroom door is closed. Though mostly I try to avoid running laundry after bedtime. My routine is to toss in a load in the morning, flip it to the dryer at least before dinner (often earlier since I WFH), fold and put away at bedtime.
Also where it had been previously was just awful! It was in a space so small and the unit had to be turned sideways. You had to do this shimmy thing to get in there and I dreaded it so much. The floor was also crooked, so I kept getting hit in the head with the dryer door. What's more our stairs are pretty steep and I could just see one of us someday in our old age tripping on the stairs carrying a basket full of laundry!
