So... we have a terraced house without a basement and therefore placed all our technology in the attic - right next to the bathroom and bedroom, to avoid having a utility room on the ground floor. We have a pantry under the stairs that houses everything necessary.
In the attic are the heat pump, controlled residential ventilation, as well as the dryer and washing machine. My wife likes to do a load of laundry or start the dryer again before going to bed. You can sleep peacefully - also thanks to the soundproof door and the fully foamed frame. In the bathroom, you can occasionally hear the washing machine when water is being drawn, as the pipe runs directly inside the wall.
Otherwise, with proper planning, this works very well nowadays.