Renting to Short term tenants

[Bryan O'Neal]

Situation: Rental applicant is in town on extended business. She says at least 18 mo. She and an associate would like to apply/ sign a 12mo lease. Should I add to the monthly rate since I know she is not a long term possibility. One of my criteria is always to try and find someone who has the possibility of staying 5-10years. What are the pros and cons? Suggestions please.