Where the most desired incall location is within Chicago. Any help?

That is easy - wherever you are hosting!  

For me Oak Brook is surrounded by 4 expressways in each direction. My issue is time and convenience. Parking and traffic suck in the downtown area. I'm sure I would feel differently if I was still living in Lincoln Park. I do agree with SomeCatsSay that "where ever you are hosting" is a good Incall location.

I interpreted "within Chicago" in the title literally. In any case, I guess the answer is which location is most convenient to the most paying customers.  

For me it would be either the NW burbs, Schaumburg area or else far W. burbs, Naperville/Aurora.

For a provider I am excited to see, I will travel anywhere. If she is special, I might even go to our dreaded downtown which I hate doing.  

A large, busy hotel that doesn't require a room card for the elevator. Mag Mile and that general area is typically convenient for city dwellers.

Gold Coast, Lincoln Park, Andersonville.  Or wherever you are, Mila.  I'm overdue to see you again.

Hobbyists live and work everywhere, so convenience and preferences are different for each individual. I see negative reviews when a place is dirty or perceived lack of safety; conversely, positive reviews may mention comfort, perceived safety or luxury.

I almost always try to take public transit to my hobby appointments, even if it has weird/poor scheduling.  The L or Metra is best, but buses will do if need be.  It's safer and more anonymous.  And it's fun to sit back, look out the window, and smile blissfully (causing fellow passengers to think of you as "that guy" and just tune you out), rather than try to control yourself while actively driving.  Plus, LE tends to look for cars, *especially* in the suburbs.  Nobody suspects the guy who rides a bus .  A provider I saw not that long ago even complimented me for taking Pace instead of driving.  Although, the bus driver looked at me funny when I got on with a goofy grin on my face.

I hold two locations one that my sister manage and one I manage. It takes us 30 mins to arrive at either OB or OP.