Please contact me if you have never driven a Prius before. There are a few quirks that I would be happy to review with you, which are a little unusual to non-hybrid drivers. Also see my FAQ for the main ones.
No smoking please. I strictly enforce this rule out of courtesy for future renters (and my personal comfort since I this is the car I usually drive).
Pets are OK but please vacuum the car well before returning it (no pet hair left).
I have a no food rule for my kids, which ensured that my car has remained quite clean throughout the years. I can't really enforce that rule with reasonable adults, but please clean up after yourselves if there are any spills or crumbs left behind. I try to offer a very clean car, so will have to charge cleaning fees if you return it messy, so that I can get it cleaned up again for the next renters.