I spent a day climbing there when on a family holiday about 8 years ago.
We went to a Go Ape style high ropes thing at St Georges de Didonne. The staff there at the time were mostly climbers so I arranged to meet them at the crag and they were my guides there for the day.
If you're staying to the West Angoulême, it might be worth dropping by there if you can't find a guide anywhere else.
St Georges de Didonne is worth a visit if the family like typical seaside towns. Probably very busy though.
I think we did some good 6s on the right side of the main wall that were quite good and we went to another area with lots of 6s and low 7s, my memory is all a bit hazy. The routes were generally quite fingery and bouldery.