Finding a property manager for a rent by the room house

[Mary Ainsworth]

I'm planning to buy a property in Tuscon, AZ and rent it out by the room, but I live in San Diego, so I will most likely need a property manager. 

However, when I talk to agents and lenders they say property managers won't manage a property that is rented out by the room. Is this true for all property managers? Any recommendations for finding one that does? I've talked to three so far and wondering if I should just keep calling more possibly. 

Thanks!