@Brie3975
Your drop in bookings could have been caused by the recent changes that Airbnb made to their search functions, with the categories, etc. etc. It has affected a lot of hosts (you can find many threads on the subject here on the CC). Have you checked your views to see if people are looking and not booking or just not looking at all? Have you checked where you appear in search results (try this on someone else's computer or device or log out and in again after deleting cookies, browsing history etc. to get accurate results).
If it's not the views that are the problem, have you checked out your local competition, both in terms of pricing and offering? Have you checked their calendars to see if they are getting bookings for the same period?
I know nothing about pricing in your area and if your rates are fair. The house seems very spacious, but I agree with @Gwen386 that the decor looks dated. If I was paying full whack, I'd expect something a bit slicker.
Having said that, your monthly discount is huge. Is this for full occupancy, i.e. for 10 guests? If so, you are only charging them $384 each for a month (before fees and taxes, which don't go into your pocket anyway) and $9.50 each for cleaning! That seems very, very cheap.
I don't know if you expect to get monthly rentals often in your market or not, but if you do, I am surprised people wouldn't book with that discount.