Marketplace is checking back in to six of Canada's largest hotel chains, testing to see if they have cleaned up their act after we revealed The Dirt on Hotels last year. Are the stains on the sheets and walls gone? Are the bathrooms and ice machines free of bacteria? After Marketplace uncovered what's really between the sheets and hiding in Canada's seemingly clean rooms last year, hotel chains promised to improve their cleaning practices. But did they? Despite promises to address the shocking conditions, bedroom surprises still lurk in some of Canada's most popular hotels.