Water is clear but cold. Gets choppy with increasing wind speed. The first hundred meters the water is shallow but stones are in the water, shoes are recommended.
There is a grass area for rigging. The shore itself is made out of rocks which are roughly 1m high. Caution: It is not easy and safe to get in and out with a kite in the air.
Caution when the wind comes from a northern direction: the wind direction and speed can change quickly and may become offshore, which will drag you out to the lake and sooner or later to France.
The bay area is covered so the wind is not as strong as it gets further out.
Not sure but probably kiting is prohibited in the summer months due to swimmers and families on picnic. Respect the people and rules. If in doubt ask around.