Reviews of touring and traveling providers need to include more information.  The providers base of operations should be the 1st city listed regardless of where she was reviewed and the questions need to elicit that.  I understand that listing other cities is a problem if she doesn't have a regular circuit.  

This topic has come up before, too. I'm not finding the best ones, but start with this:
http://www.theeroticreview.com/discussion-boards/suggestion-and-policy-4/locations-touring-cities-etc-17154