Aisha رضي الله عنها said: “The Prophet ﷺ slept on a bed made of a hide-skin filled with the bark of a palm-tree.” [Shamail Tirmidhi]
In any house of the Prophet ﷺ, his bed was basic. It was hard as the expectations from him were high.
True believers have to restrain themselves from indolence and luxurious living in the world. They know that life is a Jihad (struggle), that they have only been put on earth to fulfill a mission, and that their real home and place of rest and luxury is in Jannah. For this they need to follow an energetic, strenuous and hardworking pattern of life.