You probably don't want a commercial-kitchen dishwasher; IIRC you're expected to have someone in to replace the hoses in them every year or two, because they make those hoses out of plastics that are tolerant to higher temperatures, but at the expense of plasticizer degradation (becoming stiff + brittle) after just sitting around at ambient temperature-and-pressure for a few years. A residential dishwasher, while not able to clean as well, will be able to start up just fine after years of disuse; which is more what you want in a house or apartment that might go years sitting empty.