A single person supplement is a charge that can be added by some hotels that would normally charge per person per night.
If a booking is made for just one person, then you may be losing out, and want to charge an extra fee to make up the shortfall. This can be achieved by using these options. So for example if one guest books a double room (which should normally cost $100 per person per night - $200 for two guests) you can add a single person supplement let`s say $50, so the room will cost $150 if booked by just one guest.
