Be nice, be nice! I lived in NYC for thirty years. Apartments there don’t come with washers and dryers because there is usually no room for them. Plus, if it’s a rental you can’t just go rearranging the plumbing to hook them up even if you had the space (which you don’t).
My son now lives in Brooklyn and he takes care of his laundry the yuppie way. He drops it at the laundry and they wash, iron and fold it for him.
"Back in the day," during the 70s, my sister had a "semi-mobile" dishwasher. You rolled it next to the sink, plugged it in and attached a hose to a special adapter on the kitchen faucet. The same hose had a water inlet and drainage line.
Personally, I prefer my appliances plumbed into the water lines.