Renting can have some challenges in today's market. If the number is too good to be true, they are listed on a site like Craigslist and not with a real estate professional you need to look for the obvious.
Have a real estate professional check to see if the house is in foreclosure. Check to see if you are communicating with the owner. Never give a deposit without doing your "homework" or you along with 3 other families will all be showing up with your "You Haul's" ready to move in and you have all been ripped off. Your on track asking questions.