A site near Lewes / Brighton

Hi can anyone recomend a family site near Lewes / Brighton. There will be three adults and two children. My brother is gettting married the week of the Jubilee so we need some room to get ready, ie a site with showers etc. I have looked at a few, but the reviews were dissapointing, and there dont seem to be many in that area. We need a site close to Lewes, or at least that side of Brighton, as then we could get a taxi, and my husband can have a drink. Thanks xx