Renting out a room in my home... no overnight guests?

[Meldeine Sipes]

 I recently learned that there are a lot of people in my area that rent rooms to travelling nurses and other professionals on a month to month basis. I'm leaning toward doing this for now to get my feet wet and to save up cash for a larger DP on a rental in the future.

I've seen some agreements online but haven't seen one that specifically says no overnight guests allowed. I want authorize guest but they have to leave by 10pm (typical curfew in my neighborhood). What do you think?