Hi Critch,
Have a look at the Cherpont web site
Etang de Cherpont
Myself and my mates have been going their for the last 5-6 years and I can recommend it to you.
You will have to drive down to Falkstone though where you leave your vehicle locked up in a secure compound, get on a coach and off to the lake.
All meals included in the price, fantastic lake with some awesome fish to be caught.
There are a few lads on the forum who go so I'm sure you can get recommendations about the lake if you ask mate
Good luck in your search pal,
Cheers Slim