It Was a Converted Warehouse
Metro Hotel in Hagersten, Sweden, right outside Stockholm. It was a converted warehouse and had interior windowless rooms, which is a fire code violation in the US. The location is in an industrial district bereft of anything but sketchy people.
My bag gathered dust bunnies on the roll down the hall. The bathroom smelled like pee. I told my kids they could not walk barefoot nor take a shower without wearing flip-flops. The curtain was so thin that the industrial strength security lighting lit up our room at night. The elevator was a cargo elevator, which was kind of fun. And, if you canceled any portion of your reservation without a minimum of 24 hours notice, they charged you the full reservation amount plus a cancellation fee.
Anyway, the moment I got my computer on the wifi, I booked us into a much better more expensive hotel for the rest of our stay in Stockholm, but one I knew was clean. When we drove away after two nights, we were missing a license plate.
Story credit: Reddit / Queen_Starsha