A few things that we've experienced:
1) There was a pretty strong odor (smelled like melting plastic) in the upstairs bedroom.
2) There were also two electrical blackouts our first evening where her breakers had tripped out due to us having too many lights on at the same time (I think she needs an electrical panel upgrade).
3) No hot water. We only had about 5 gallons of hot water, after that everything (sink, faucets, tub and shower) were luke warm.
4) Downstairs bedroom was chilly at best.
5) Washing machine works as long as you don't use any other appliances and, we were instructed to use only short cycles on the washing machine.
The electrical blackouts and shortage of hot water were blamed on us. This unit would be better suited for no more than one couple due to its inability to provide adequate utilities (i.e. electricity and hot water).