Yep, downloaded a short term rental agreement template(easily found online), tailored it, embedded the whole thing in my rules, and stated that booking constituted agreement. I'm IB so my rules are voluminous in case I need to chuck somebody out (without penalty). I even include a requirement to comply with the county regulation I'm subject to, with cites. (Under which "smells emanating" are forbidden!) Is it enforceable in a court of law? Don't know for sure but it can't hurt.