I enjoyed Happy Days Diner a lot. While in Paris on vacation, I had a sudden desire for a burger…read more(what can I say, I'm an American), and stumbled upon HD Diner. I ordered the avocado burger and while it wasn't the best burger I've ever had, it (and the fries) were quite good. I also love retro (or faux-retro, I don't discriminate) diners under any circumstances, so thought the interior was adorable.
In fact, I got such a kick out of this place that I returned one more time before leaving Paris to have a milkshake, which was great! I had mine with Nutella and speculoos (two flavors you don't often encounter for milkshakes in the U.S.) and thought it was delicious. If you're expecting amazing cuisine, clearly there are many, many places in Paris better suited, but if what you're looking for is a fun, quick bite, I'd give HD Diner a try!