I think that people will argue around that. Self-driving cars are already strong enough to kill people and even if you only made the robot strong enough to lift 15 pounds of weight, that's probably strong enough to slit someone's throat with a kitchen knife while they sleep... There probably isn't a level of strength that's weak enough to be completely safe but strong enough to be useful.

So at some point you have to trust that the tech is safe. Both in terms of "robot won't go off the rails", but also in terms of hostile actors can't remotely take over your robot while you sleep.

In terms of sleeping, personally, I would like for the law to mandate that robots must have a physical off switch, in a very visible location, that physically disconnects power. The switch should be illuminated while in the ON position. What makes me a bit pessimistic there is that we don't even have laws to mandate webcam indicator lights (e.g. a very tiny red LED) must be ON in hardware.