When a rental of a Maine home or apartment comes up for grabs, and the seller says help me fill it, I ask a few questions.
Need to know a few things from the renter to be. The best question is tell me about your last landlord. If the answer is "the guy is a jerk", I ask for more details.
And if I get "he always wants his rent on time, is all over me, chasing me when I am just a couple weeks behind" I start to see some of the renter's past payment habits history.
More when an attitude comes out about how sometimes going to the fair, getting a tattoo is where the rent money goes and that's just the way it is. Not going to change.
I try to point out that the rent comes first, right up there with groceries for the kids. Because if the priorities are not met, the renter is going to be moving again.
Out on the streets. Looking for a place to stay rent free. Because it is not going to be this unit I am charged with renting out. Or the home for sale in Maine that needs a tenant to help subsidize the overhead, payments. While the owner is out of state and renting a place waiting for this one to sell.

Because listing, selling property is an emotional one where the stakes are high. But the feeling, compulsion to move forward with a purchase or sale of a property can dim, fade, go out. 
Well, yes and no. Today's all out, full throttle marketing of property listings means we don't just deal with one buyer at a time. No no.