To update your space's photos:
Log in to your dashboard
Under "Settings", click on "Listing Details"
On the "Photos" section, click on "Edit" on the right side
Drag the photos you wish to add to the "Drag images" box, or click on the box to upload your new photos
Photos must be 2MB or less and in JPG, JPEG, GIF or PNG format
To remove photos, simply click on the "X" button on the upper right portion of the photo you wish to remove
You can also re-order your existing photos by clicking on the left or right buttons on the lower portion of the photo/s you wish to re-order