Over on the Site Talk board, we're discussing rules for chowhounds, and Sean wrote:
"Rule: Always visit the restroom. If it is filthy, expect the kitchen to be the same"
Actually, I'm not so sure about that.
Don't get me wrong; I'm as grossed out by a dirty rest room as the next hound. And lack of soap will send me packing every single time. But consider:
1. the guy who cleans the restroom is not necessarily the guy who cleans the kitchen
2. to keep a bathroom tidy, it's not the quality of the cleaning job, it's the frequency. The frequency of the mop guy's pass through the WC's is not necessary emblematic of anything else.
3. even "clean" kitchens are messy; it's something that chefs are trained to deal with; to have methods in place to keep things relatively healthful amid the madness.
4. only a relatively few countries have traditions of sparkling restrooms. That doesn't mean their food is uniformly "dirty". Any country with a tradition of tainted food is not likely to have survived!
That said, a clean bathroom is a desired thing, and a dirty bathroom definitely is definitely a red flag.