I've been there, only the once though. Site is set in a valley, with a lot of paintball arena style kit about. Big bridges and suchlike.
Pros - Covered safe zone, proper toilets (with power and everything). Pizza delivered to site for lunch. Really well organised, games were well varied and thought out, marshalling throughout the game I found to be on the whole (however, see below) - good.
Cons- Possibly harsh to blame the site, I don't know, but when I was there we had a ND with a loaded gun. BB just missed my mates eye. There was a rebriefing to everyone, followed by a warning that the next ND would result in the offender kicked off site. Less than 2 mins later, another ND. Offender was not even told off this time.