Management is the operative term with property management.  With professional property management, you need to be sure to vet the company for the 3 P's:  price, performance, and professionalism.  No owner wants a PM company to mishandle their clients, aka tenants.  The company has to perform well, receive rents timely, pay you timely, manage contractors, etc.  Price should be a consideration but the adage, you get what you pay for is certainly true.