Gee, that brings back memories.
When I was growing up, we had a portable, round GE dishwasher--maybe the same as that one. I was probably 4--6 years old, and already I was interested in kitchen appliances.
The top was painted, not porcelain, and when it got hot during use, the paint could easily be scratched off. Using the dishwasher was a lot of trouble since it had to be connected to the faucet (and that part was not good) and there was a switch that had to be moved, probably from wash to drain, and eventually my mother ditched it. I would love to see another, though, and I haven't.