Hannah, thank you for your very kind words, and I apologize for the aspects of your stay which were difficult for you. I go up and down that driveway frequently without touching the trees or scratching my truck, so it has not occurred to me that it might not be so easy for some guests; I'll check the junipers immediately, so sorry your car was scratched, and I wish you HAD left your car down below, or at least contacted me about it. I can alleviate most concerns if I know about them.
Re: the bed, I do know the futon (had to be specially made for that rounded space) is not as soft as some guests would like. Addressing the matter, I just put a memory foam pad on the top which I thought had solved the problem, though apparently not; I'll keep working on it.
As far as the size of the Spartan is concerned, the 3 dimensions are listed on the Airbnb page, as I knew it might be too small for some people. The composting toilet is also listed, it being the only toilet possible for this lodging in the back yard.
I'm sorry your experience was not all that you hoped it would be. It is very important to me that guests have the best experience possible here, and clearly yours fell short. My deepest apologies.