The idea is so intuitive that I don’t understand why it haven’t been thought of before. Anyone that has limited space really needs to consider this unit. A conventional washer and dryer can stack however the controls are quite high and shorter people, like my wife, have a hard time using the controls. This unit has all the controls in the middle of the single unit. 
Controls are so intuitive it takes only a few seconds for set the wash or drying cycle you want. Large, full size, capacity for even the largest loads. 
I would recommend this unit to everyone. In fact, I did. After my son saw mine, he then purchased the same unit for himself.