Yep just from images (and Google) - I examined one of the images from the post at a higher resolution (by clicking on it) and took a look at the map on the right-hand side.

It was a map of Thailand, so that gave me the type of restaurant. From there it was just a simple Google query combining that knowledge with the URL structure revealed in the blog post:

http://www.google.co.uk/search?q=thai+restaurant+locationid%...

Then it was just a case of working through the list of possibilities (it was second on that list) :-)