Hello Chris. Nice place! I took a look at your listing and indeed you did not do the pricing as you intended. I suggest you go back to the host portal and to your listing. Go to Pricing Settings. Look at each option and complete it as you intend. You will need to choose a per night rate, not a weekly rate. Then go to the Availability Settings and choose minimum nights required as 7. The Airbnb platform will calculate it correctly for you and also will not allow a booking of less than 7 nights.
I saw your daily rate is for only one person and then you have a pretty steep rate for each additional person after the first guest. Since the property is really set up for a group, the price would get expensive quickly for the 7 guest limit. You may want to rethink that. Rarely would only one person rent a property of this size and location, so price your property for a group rate of at least four and then do the additional fee per additional guest if you wish.
Also, you have two listings for the same property. One property lists the whole house rental as the daily rate you intended and the other does not. Decide which listing you want to keep and delete the other one. Then take some time to really fill out the information for all sections. Choose a brief, but meaningful name for the listing. If you choose to use B&B in the title, people will expect you to serve breakfast. Be sure to add more photos and use the caption feature.
Lovely location and nice accommodation!
