Travelsupermarket.com is a good place to check for Dubai hotels - should be possible to get something pretty good mid-week for 150 a night in Feb. Friend of mine swears by the Jumeira Rotana in Satwa which is convenient for most things at least, also the Novotel at the Trade Centre is OK. As it's only a couple of days perhaps consider spending more and going for one of the Madinat Jumeirah hotels or perhaps the Jumeirah Beach Hotel.