If you obtained the information through an intermediary, then I suggest you find the landlord through an intermediary. Maybe you want to bypass the intermediary and negotiate the price directly with the owner to save the intermediary fee, but this behavior is immoral from the beginning. Intermediaries make money by selling information. If everyone bypasses the intermediary, the intermediary will not exist. Secondly, if you have already signed an intermediary contract with the intermediary, then if you try to bypass the intermediary, it will violate the contract law and cause a breach of contract, and you need to bear the liability for breach of contract.
So I suggest you consider what to do according to different situations.