After you list several suitable candidates, I suggest you go to the site to check the situation of the house and ask the landlord to show the relevant housing documents to ensure that the house can be rented out.
You can also learn about the house and the landlord on the Internet for reference and comparison.
Once you decide to rent this house, please sign a formal lease agreement with the landlord. Please list all the negotiations and communication in the agreement, because this is the most important legal document to protect your rights.
It is usually necessary to pay the landlord 1-2 months' rent as a deposit. If you get help from an agent, you may have to pay them a commission.