I'm able to edit my "Guest Resources" under the "Listing Details". My complaint is that the "Guest Resources" field is text only. (i.e. you can't post pictures or formatting) Because of this, I have to send my guests a long series of messages and pictures to help them navigate their arrival. This is very inconvenient.
Frankly, allowing us to create a PDF document with check-in or other instructions would be much easier than these text boxes.
Funny thing is that the commenting tool we're using right now in this conversation allows for the insertion of pictures and formatting. The tools available to hosts do not. 😞