Where appropriate, we believe that this regulation only underlines the owner`s obligation to act reasonably when setting an early cancellation fee. While the lessor is not allowed to charge all the rents to which the lessor would have been entitled until the expiry of the rental agreement, it is doubtful that the tenant can charge the cleaning fees, advertising costs and non-use fees of the property for a certain period of time due to difficulties in finding a suitable tenant (again, the “fixed period” cannot cover the entire remaining rental period, since the tenant`s liability for all these costs would be punitive, inappropriate and contrary to the tenant`s rights of withdrawal under the CPA and would also dilute the owner`s obligation to reduce the damages).