Thanks everybody,
I took a look at the Hilton website and they had a great deal on family rooms plus breakfast, so I booked there. We all like the idea of being right on the spot. We'll decide what we do of our afternoon when we get there, mainly depending on the weather... and if our plane is on time!!
Brighton sounds nice, my daughter and I are big fans of Hercule Poirot and we've always wanted to visit the pier you can see in the movies. [msnwink]
I tried to check the price for a train (not Gatwick Express) to London (or Brighton for that matter), but got lost on the websites[msnembarrased]... I think we'll just see when we're there [msnembarrased].
Thanks anyway for all your advices!