I've never stayed there but have been to competitions held there a fair while back.
It never looked the tidiest of places, the arena was deep and the place looked generally messy.........however the cross country course was good fun, not big, but that suited me fine!!!
It might be different now though, as we are going back a few years.
The hacking would be excellent as it is all in Thetford Forest, but I would avoid going in the hottest of weather as the flies can be a real pain!