@Sang529 Like you, we have a large property. It was difficult to get the amount of bookings we wanted on it because of the large price associated with a large property. It seems there are more small groups of travelers than large groups of travelers. We split the house into 3 separate listings, which you could do as well since you have 2 kitchens. Guests can rent our upstairs portion, downstairs portion or combine the whole house for more space and/or larger groups. All we did was add a steel exterior, double locking door at the bottom of the stairs. We keep it locked unless a guest books the entire home.
Giving guests the option of a customizable space has worked very well & increased our bookings.