Are my actions morally wrong?

For the last eight days, I have allowed a tramp to live in the mansion so long as he entertains me. I have had him (try) to swallow swords, eat fire and walk through hot coals. He is now very unwell with various injuries but, nonetheless, I have found this vagrant's amusing stunts very entertaining. But I have wondered whether the singular enjoyment of this desperate man's suffering is morally wrong, given that he is only doing what I tell him because he wants a night of shelter. I would appreciate advice from you common people.