Angela Rippon, Gloria Hunniford and Julia Somerville continue the new series of holiday investigations by examining the cleanliness of British hotel rooms. As lab tests prove there's a lot more to hotel hygiene than meets the eye, will booking into a more expensive hotel guarantee you'll end up with a cleaner room? Also today, with complaints that some five star hotels don't quite meet the high standard you'd expect, the team unravels what exactly determines how any stars a hotel deserves. Plus, travel expert Simon Calder has money-saving tips for visiting the USA.