Hotels and apartments don't generally have fireplaces. Same with trailers or even many newer homes - especially in places that are normally warm. Kind of like some cars sold in certain parts of the world might not have a heater.

I know that during the big winter storm of 2021 I was without power for 4 days, and the temps were as low as -2F in my area. My fireplace worked enough to heat our living room, but at night our bedrooms fell to between 37 and 42 depending on how late we ran the fireplace. People died. I can't imagine what people did that were unlucky enough to have just brought a baby home from the hospital, or that had their elderly parents living with them.

Also I don't think the main problem is the 68F - I think it is the fact that they are turning off the heat at night. It won't even be near 68F in the morning.