I've been looking for a wee holiday at Lastminute.com - I'd snap this one up if the dates suited me, but alas and alack... they don't. To get it for this price, you have to be willing to travel in April.
This looks like an amazing deal - £371 for full board, 13 nights in Kenya, at a 5 shield hotel (just short of a 5 star).
Details: As hotel grading systems in Kenya differ considerably from those you are accustomed to in Europe, we have developed our own unique system to give you an idea of the standard of our hotels. Our classifications range from 1 to 6 shields; from basic accommodation to an excellent standard with a wide range of facilities but should not be confused with the usual international star ratings.
EDIT - adding in the £55 fuel surcharge...