Actually this offer appears to have been sent by Flying Blue as it comes on a Flying Blue letterhead and you get a bonus of 3,000 FB miles if you take up this offer.

Anyway, the details:
Phone 00800 4400 4400 to book
Quote reference: 15626
Lines open: Mon - Fri 9am-9pm, Sat: 9.30am - 4pm
Booking must be made by 30 April 2006

Price from £119 p/p (usually £400) and includes three nights accom, breakfast, complimentary car hire, a guided tour. Apparently the price of £119 applies between 1 nov 06 and 21 march 07 and it's £169 between 22 mar and 31 oct and a suppliment may be charged for Auguse bookings as that's the peak time. Only open to European residents.