Hello @Theresa53,
By "the space description" do you mean the area called "The space" like in the first screen shot below from my listing?
If yes, then that can be edited in a few different ways. One is described below.
If you mean the boxes for "country", Street address", City, "zip code" that are found under "edit address" when you click on "location" in your calendar, then these cannot be changed by you. You'll have to contact Airbnb and ask them to change them.
One way to edit "the space" text is to go to your calendar. Then click on the four bar icon in the top left, beside the photo of your listing.
Then select "Description" and then scroll down to so the box called "The Space" is visible. You can then edit the text as shown in the second screen shot below.
Second screen shot new "The space" text.