We've just got back from Elveden. We had a great time.
What you bring depends on the type of accommodation you stay in.
We stayed in an executive lodge and were provided with washing up liquid, dishwasher tabs, towels and loo rolls. Plus maid service every day to make up your rooms.
I found that they would leave extra loo rolls etc if you left them a message on the chalk board.
We just brought groceries for breakfast and afternoon snacks, and ate out at lunch and evenings. The trip before, we brought food for the BBQ. Depends if you want to cook or not.
It can get expensive if you book a lot of activities, but if there is something you'd like to do, pre book online as spaces go quite quickly, especially in half term.
Do bring your own pool towels as these are provided at £2 each. Also some paper towels as there's none in the kitchen or the shop there.
Clothes-wise- bring jeans, trainers etc. waterproofs for rainy days.
It's great for the kids and nice to wake up to the sounds of the forest. We love it, but whether you do depends on what you're expectations are.
Hope you have a great time.