Fact 1: I live in a town house, and it has 3 levels. Heating this thing is a nightmare. The top floor gets really hot, the middle floor is pretty cold, and the basement is freezing. I've complained to myself about how much it costs to heat this place for awhile, as well as the fact that I don't get to use my winter quilt because it gets really hot upstairs.
Fact 2: My apartment has 3 bathrooms. One on the main floor, and 2 that connect to the bedrooms upstairs.
The connection I made between the two today: I may have complained about how it's hot upstairs, but it's so much better to sit down on a warm toilet seat than a freezing cold one, especially when you just come in from the cold.