Giving people a completely different room than advertised is false advertising. I dont care if you only have "1 room that looks like the one on the photo" - then you should take more photos.
Instead of a spacious twin room with bathtub you gave me the key to a tiny attic room with 1 small double bad and no bathtub. It took a lot of convincing to actually get the room that i paid for. I think this is unacceptable. You're taking advantage of unknowing tourists that think this is a normal thing to happen. It's false advertising under the Dutch law.