When renting a house by yourself, look at the house first, and then don't pay off all the money at once. Then you must see the landlord himself, in case the landlord himself can't get the money to drive you away. In addition, you must sign a contract.
If there is an intermediary, there will be an intermediary fee and a deposit. Pay less if you can, because it is a problem whether the deposit is refundable or not.