One thing I'll tell you.. never ask for the Google support teams help: all they tell you to do is bid more. It's almost as if they're on commission. Google PPC is slowly becoming more and more expensive - and Google are slowly putting more and more adverts on the site.
My experience with the Google ad reps has generally been pretty positive. The only complaint I have is that it seems like they want to spend 30 minutes on the phone with me every other month.
Once they've consulted with you, they probably have their performance tied with your account and the accounts of anyone else that they have consulted with. Naturally, they would want to check in regularly if that is the case.
Are there any open source solutions that allow me to do this for my city? Simple execution, mobile ready - add locations and reviews along with 'find places nearby' ?