Malbork Castle

The Teutonic Knights were knights of small stature. This is evidenced by, among others, small beds in the dorms.

An excerpt from the article 24 facts about Malbork Castle

However, it was not the height of the monks that determined the size of the bed, but the fact that they slept in a half-sitting position. They believed that if they lay completely in bed, they would bring death upon themselves because it took everyone lying down with it.