I WFH in a small home office that used to be the coalshed for the 1960’s council house.

We use it to dry our clothes with a dehumidifier over night (no tumble dryer) so in the morning it's nice and warm, then working in there with 3 monitors and a laptop that CHUCKS out heat, it stays toasty alllll day.

In the summer though, it's like an oven in there.