Ensure you maintain your property to a habitable standard and that you replace/repair items when needed. If your tenant feels that you take care of your property they are more likely to treat it in the same way. Remember, it is your investment therefore it is beneficial for you to maintain it.
Understand the balance of a good landlord. A good landlord knows that they will need to act quickly for their tenant when needed but they will also provide their tenant with the freedom, privacy and enjoyment of their property.
Know about your property. The more background you can provide the agent with the more they can sell your property during a viewing. This may include the age, boundaries, drainage, parking etc.
If an offer is put forward by an agent ensure that you are provided with enough information in order to make an informed decision. This will include exactly who will be residing in the property, their ages, backgrounds, employers, licenses, if they have animals etc.
Once you have signed a lease on a property you are committed to a legally binding contract.