@Emma2663 Your listing title is confusing and you should change it. Sleeps 2-8 is not what you want to say.
You list the place for a maximum of 8 guests. That's all you need to enter. Obviously less people could book it if they want to. Your wording will lead people to think they can show up with 8 without letting you know.
You can have a set charge for up to 4 guests and an extra guest fee for any above that, however you want to work it. Then make that clear in your description, and also question guests when they book as to whether they have entered the correct number of guests on the booking, letting them know that only registered guests will be admitted.
And your listing description is not done correctly. You haven't described the house at all. You need to paint a word picture for guests of the rooms, the layout, the outdoor space, the kitchen provisions, etc.
What you have written is an introduction, not a description.
I really don't understand why you are listing for 8 guests, though. There are 2 bedrooms which the photos show as having one bed for 2 people in each, and you only have 1 bathroom. Why are you trying to cram 8 people in there? And where are the other 2 beds you list?