Since I am not familiar with the different neighborhoods, I am trying to get more info as to whether an area is in demand by tenants or undesirable because of criminal activity or in a run down part of town.  

For some, location will be undesirable.

The General Assembly, therefore, determines that it is undesirable for any person to be found liable for damages due to his or her efforts in the removal of snow or ice from such sidewalks, except for acts which amount to clear wrongdoing, as described in Section 2 of this Act.

But unless the OP's unit is undesirable or has issues with the neighbors, the tenant won't be shopping around.

There were several undesirable tenants so we worked them out over the course of the year. 

@Ryan Fagan yes I plan on staying within three blocks of the riverfront ,anything close to the riverline or after in my opinion are undesirable. 

Some people will be better at planning than execution and vice versa.You will need to have a good balance between planning and execution.You can have the best plans in the world, but if you don't execute on them, then they are worth nothing.Or on the other hand, you can be great at taking action, but if you don't plan well and know your destination, then you can end up at a very undesirable place.

Even in the undesirable areas of Denver I can't picture finding a $100K property that would rent for $2,000/mo.  

She is a single Mom who has had an undesirable "boyfriend" hanging around for several months. 

If the occupants are undesirable, I'll certainly have a friend with me.