Thin Windows
Not a lot of sunlight in this castle, hm? People in the castle often had to rise as soon as the sun did. This way, the workers were able to get their chores completed in the light, which was in short supply inside. If a servant overslept, they could potentially miss the entire day!
Bottoms Up!
No one in the mansions was ever sober. Drinking was a way of life and liquor was always readily available. Water was often dangerous to consume since it was so often teeming with bacteria and harmful toxins. Drinking alcohol just seemed like a safer alternative.