Family friendly near west sussex

[shentok]

Hi all
It's my DH 40th coming up soon and my original plans for him have had to change! I'm taking him for an overnight/nice dinner just the two of us but I'd also like to book an overnight for the kids to join in (11 and 8). I'm thinking maybe a cabin with a hot tub or something like that. Do you have any recommendations of somewhere I could book in or around the west Sussex area?

Thank you x