I lost my phone but retrieved the GPS coordinates of its location. It's not where I lost it - meaning someone has it. What do I do now?

So as the title says I lost my phone at a bar (it was a closed party but still had lots of strangers that I'd never met.) Today when I got home from work I had my room mate text message the code to receive its GPS coordinates. It's nowhere near the bar. What can I do with this information to get it returned to me safely?

Edit

My room mate who was texting my phone to get coordinates realized later that it said it was accurate within 1500 meters. So much for that :\