@Sarah2119 Your listings are set up incorrectly, very confusing, as Gordon said.
You need to remove the photo of the double bed room from the "4 bunk bed room" listing, and remove the "4 guests" from the double room listing, changing it to 2. And remove the photos of the bunk bed room from the double room ensuite listing. You can mention in each listing that you have another bedroom which sleeps XX number of people, that they also book if they have a party of 5 or 6.
Then you set up a third listing which encompasses both rooms booked together, shows photos of both bedrooms, and link the calendars so if one bedroom gets rented, the 2 bedroom option gets blocked.
There are too many photos of the same rooms. And you should caption each photo as to what it represents, rather than having the name of your listing under all of them.
I'd advise you to snooze your listings until you you get this set up correctly.