Hello Charles, depending on the size of your market there are a couple of ways I have found to be helpful. In larger markets with many visitors and many airBNB hosts, there is an application called AirDNA which will make smart pricing suggestions based on your market and can auto-adjust your pricing on AIRBNB and other platforms if that is something you are interested in.
If you have a smaller market, like myself, then I feel looking at what other AIRBNB (etc.) listings are going for in my neighborhood and staying close to remain competitive. Unless you have a pool, hot tub, or something truly unique these guests are not going to pay much more than your surrounding neighbors. I like @Bronwyn100 's idea of finding small ways to upcharge for additional guests or pets or cleaning, etc. That way your search price remains reasonable so you are getting more views.
I hope some of this is semi-helpful because it is a lot of trial and error and that does make it hard to calculate your costs verses returns. I am still new to it but I think it is a great way to pay down a mortgage.
If you are interested in those event/weekend guests, then keeping your nightly rate lower and upping cleaning for short stays may help to capture those guests better than saving 15% or something similar. I prefer longer guests so I have fewer hassles and so I am willing to offer good discounts when booking longer than 7 days and then even lower if booking longer than 30 days. If you are near a hospital, this also is nice for traveling medical workers who are professionals who are getting paid well for, usually, 13-week contracts and they need a place to stay with a full kitchen, etc.