What Does a Slumlord Want???

[Sam Epperson]

Slordlord "A": Has little trouble renting rooms. He has owned the property for so long, in such a desirable space, that it nearly does not matter the rent is charged. Space will be filled. 

What problem do i, a non-slumlord, solve? 

person is renting  ugly/gross rooms at market rate due to lack off rooms. no "plethora" of rooms on the horizon.

how to gain from this situation?