

None that I know of.
It was a planned official feature, but I think it rather touched small battlegrounds and not the main universe.
Unofficially, I haven’t seen any in the wild. Besides, the game’s economy and mechanics rely on rather very massive multiplayer.
Yeah, at the end of the day it’s a matter of personal preference. Washing machines can be installed, it just might be impractical given the size of the kitchen.