Product review (1 stars): Design is unsuitable
Although I prefer to install laundry appliances in either a garage or laundry room, my current home unfortunately requires those appliances to be located in an interior closet on the second floor of the structure. My installation is side-by-side, not stacked. This model washer from GE is designed with a "hanging tub" configuration where the motor unit is attached to the bottom of the plastic liner tub.  The steel washing basket is itself surrounded by a plastic liner tub which contains a permanent solution of saline water in which the wash basket spins with very low resistance and does not have the traditional set of gears between the motor and tub. The entire assembly is freely suspended from the inside top of the steel box by four metal rods which allow the entire mass of tub, water, and motor (including its bottom counterweight stone) to dynamically move in all directions throughout the wash cycle. The result is a washing machine which, when clothes and water are included, has quite a significant internal mass in extreme motion, especially during the spin cycle.  It was the high-speed spin cycle which my house could not tolerate.

I admit, this configuration might be specifically designed to be highly reliable over the service life of the appliance due to a lower part count and direct drive arrangement.  However, it is totally unsuitable for my needs due to the amount of large-mass vibration which seems to so easily occur in common everyday usage.  GE Service technicians visited and inspected my installation and verified the correct leveling adjustment of the mounting legs, but they also revealed to me that this model is designed to operate with a very-freely-suspended basket.  In the end, I returned this GE washer and selected a different model from a different manufacturer and I'm very happy with it.  It has a hard-mounted motor and basket, and also spins at a significantly slower speed.  I recommend considering your own installation circumstances when selecting a washer and dryer for your home.