It's a nice option to other portable generators that are quite heavy, even the smaller ones, and must be run outside. Just don't count on it running even a small portable heater in winter if the power goes out.
We have a small Honda generator we used after tornadoes took out the power for a week. I can't pick it up. We ran the refrigerator, TV, computers etc, but not the hot water heater or the freezer, so we lost a freezer of food. We had to cook on the propane grill. Couldn't even run any of the small appliances like a single burner. A week without power here is a very rare occurrence though.
Still, I would love a whole house generator. Don't know what we would've done had we lost power back in January when we were iced in for a week.