I have stayed at Whitehall Farm in Burnham Thorpe. It is a lovely place close to Holkam beach, i am hoping to go back this year!
If you do a search it will come up!!
Sorry its a late reply but little lodge farm is brilliant. Right in the middle of Thetford Forest - great riding, no or very little roadwork. Private turnout etc etc. I went for the firsttime last year and immediately booked again for this year!