Make sure they have the authority to rent to you if they aren't the owner.
See it in writing and get a copy.
Length of lease, who owns the furniture, etc..
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Yes, this rental is furnished. It explains what is in the home in the paragraph and if you click on the sublet.com, (listing website) it actually says it is furnished. Contact the owner and you can get more information about this rental whether it be from Trulia or Sublet.com. Good luck with it!