This is one of our locals and we used to use it regularly, used to being the prime words, it is supposed to be having lots of work done over the next few years but if the 'improvements' made so far are anything to go by it will be even worse. Last time we visited group of 8 units (vans, tents, caravans) gathered with plethora of windbreaks, lots of noise late at night, early morning. Vans pitched at all angles, very close to other vans. Football pitch for kids installed with caravans parked right next to it. The whole site just looks crowded and is not for us anymore, we've recently cancelled our August bank holiday weekend there and spoke to several other members on out last visit who wouldn't return again.
The area itself is superb, Winchester is fascinating and as Ray said catch the bus rather than try and park there. Alresford also delightful, Watercress Steam Railway. Intech opposite Morn Hill worth a visit. Pub next door now looks a right mess, concrete blocks outside, wasn't much good before either.