Optimal bedroom temperature: somewhere between 14 and 16°C. Our house is old and not very well insulated, so this is roughly the temperature we get in the rooms on the 2nd floor if we don’t turn on the heating, as long as the temperature outdoors stays above freezing.

For me, this kind of temperature is great at night, when I’m under a nice thick duvet, but during the day it’s too cold. My feet get cold and my fingers stiff. But Ingrid likes it cold in her room even when she’s awake and playing Minecraft etc, so she manages without any heating at all.