Rocher Saint-Germain est is a nice, beginner friendly are with a lot of nice boulders and good quality circuits.
There are white and yellow circuit, which are suitable for kids.
Then there's an orange (AD), Blue (D+) and a red (TD+).
Apart from the circuits, there's only a handful of problems hors circuit (off the circuit).
Most notable problems are Vagues Patatras (8A), La Toupie Carnivore (8B) and from the easier side L'Arête des Comiques (7A).
There's also a boulder with very nice slabs varying from hard to insanely hard. The boulder can be found under the name of L'Artificier.