@Alison845 For me, your listing shows up on the AirBnB UK site. Is that a mistake or glitch? The currency is shown in pounds sterling. It looks like you are US based, so I'm a bit confused by that.
I plugged in a Friday-Sunday in October. It came up as $248/night with a cleaning fee of about $125. I don't know your market, but it looks like you got hit on value in your several reviews.
I'm not saying to lower your prices, but I don't know if they make you competitive in your market. I say stick to a price that you feel is appropriate for your property if you want to attract better guests.
Otherwise, it looks absolutely lovely and I'd book in a minute (if that were a travel destination for me.)
With a lovely place and good reviews, you should not have any problem filling up your calendar once you get established. Good luck.