Front-loaders are user-friendly for everyone. Some individuals have difficulty leaning forward, down, and into a machine to reach items inside. People who do tasks seated or are of short stature will have difficulty seeing inside top-load machines. Make sure the doors of side-by-side machines open away from each other. There’s no need for doors to get in the way of transferring wet clothes from the washer into the dryer.
Stackable machines may be good space savers, but aren’t always functional for the greatest amount of users. Some stackable washer/dryers may require someone to reach beyond what’s comfortable and/or easy in order to operate the controls and gather clothing from inside. Consider all users and plan for easy access from either a seated or standing position.