The best way to do it is exactly as I laid out in the blog post, one site with one domain that has all the general information about your business (shared information between all locations) and then have a separate section that covers the unique details for each business location on separate pages within the overall website.

That means you might have a link in the top navigation that says “Locations” which then lists all your locations and depending on how many unique services area at each location you might actually have a page for each location.

Does that help more?