You should include your rental/house rules in you check-in and check-out email.  You could also include the main ones in your property description e.g. no parties, pets allowed etc.

You should cover the following topics:

Where to park
Keys and access
Off limit areas
Smoking rules
Parties and events
Visitors
Noise and the neighbourhood
Laundry
Eating areas
BBQ
Maximum occupancy
Rubbish and recycling
Dishwasher and kitchen 
Hot tub/swimming pool rules if applicable
Pets
Security
Damage and breakages
Emergency contact details
Compliance
Check-out arrangements
You will also find basic house rules under your 'House Set Up' tab.  Here you can select from the list below: