Honestly it’s a bad idea. Might be fine, might not be. Not worth the risk. Some unhoused folks are addicts or mentally ill. People tend to return to places that become familiar. The might come back again. Maybe to rob you.
I’m speaking from experience. I gave a guy a place to live to try to get back on his feet, in exchange for some work. Realized he’s a severe addict and couldn’t get rid of him. Then I look like the asshole for putting him back on the street.