CANCELLATION OF A RESERVATION OR BOOKING REQUEST
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All reservations or reservation requests are processed and managed by booking.com, the leading online hotel reservations.
UNDER CONFIRMED BOOKING
Confirmed booking could be cancelled (if allowed by the cancellation policy laid out at the moment of booking or booking request).
Confirmed booking could be cancelled by the structure up to a day before the check-in and only if, after a verify, the credit card you gave at te moment of booking or booking request is not valid or has no sufficient funds.
The only way to manage the reservations is to connect to by clicking on booking.com https://secure.booking.com/myreservations.en.html