To use the google apis first you need to give permission to the user
go to admin console -> pick a user -- >>
click on show more at the bottom of the page
click on More Google services enabled
enable Google app engine admin console
https://code.google.com/apis/console/b/0/?pli=1
Install-Package Google.Apis
Install-Package Google.Apis.auth
Install-Package Google.Apis.Analytics.v3
Adding to the previous post, have you enabled Google Places in your Admin Console?
Please follow theses steps:
1. Sign into your Admin Console.
2. Click on Users > Click on your usersname.
3. Scroll down and click on Show More.
4. Click on X More Google services enabled > Google Places > Save.
Hopet his helps!