As the title says £100 voucher when staying for Breakfast.
From 4th July through 1st September 2008, Stay for Breakfast at a Marriott,Renaissance or Courtyard outside the US and Canada, pay with your Visa® card and receive a Premium Pounds® coupon, or equivalent based on hotel location, for your next two-night stay. The coupon is worth up to £100 and can be redeemed for stays anywhere in the world, including the U.S.*
Price of a night stay obviously varies depends on where you stay, there are some bargains though.
Follow direct Link for info & click "book online now >>. " to search for participating hotels or call 0800 221 222 and mention offer code OTP