Another excellent post at http://www.seomoz.org/ugc/get-user-generated-content-published-in-google-places-business-listings-11636 by http://expertiseonline.net/ on Google Place pages.
The two main takeaways for me were:
1. Using hCard format for your contact details on your website.
2. Preparing for the future, when Google may scrape hReviews (standardised microformat for reviews) as testimonials, and place them on your Place page.
It’s always good to go back and review your Place page, to see if you need to correct the categories, add a status, add some photos, ask for reviews. These will all help your Place page rank higher.