While renting terms with your landlord may seem to be set in stone, however as a tenant you could discuss and come to some sort of agreement in a reduction in the rent fee you pay based on certain situations. For example, if the price range of the rent charged for your property seems higher than in the market, you could raise the issue up and negotiate a new amount.
Rent reduction could be discussed with landlords that were finding it hard to find tenants for their property, since they would be bit open to discussion. Desperate landlords will definitely come to deal if you negotiate on rent reduction.
Having a good payment record will be also helpful when trying to negotiate a rent reduction because landlords prefer a source of income that is consistent.