1. Log in to your Merchant Center and navigate to the "Settings" tab
2. Scroll down to "Presence/Review Sites"
3. Click the "Edit" button in the top right-hand corner of the Google box
4. Paste your Google Place ID into the "Google Place ID" field of the Google box. (If you don't know how to find your Google Place ID, click here to learn how)
5. Click "Save Changes" in the top right-hand corner of the Google box
A direct link to leave a review on that page will generate upon saving.