@Leo2569 Since you already have a confirmed booking, contact your guest right away to make sure you're on the same page about what your setup is and what the rental includes, while there is still time for the guest to cancel for free if there was a misunderstanding.
The variables highlighted in @Emilia42 's screenshot need to accurately describe exactly what is included in the rental:
1) The maximum number of guests you can accommodate
2) The number of bedrooms that are dedicated to the guests
3) The number of actual beds that guests can sleep in
4) The number of bathrooms that guests are permitted to use
"Private Room" generally means that guests will be sharing some common areas of the home with a live-in host, but not all guests know that. You have to be excruciatingly clear about what guests are and aren't renting, and how much interaction they can expect with you and anyone else who might enter the household - especially when we're still in a pandemic that's spread through indoor contact.
Airbnb makes it easy to take a listing live in minutes, but I don't recommend opening your calendar to new bookings until you're certain that it's 100% accurate. As you've already seen, this forum is full of eagle-eyed hosts if you need some people to run it by.