We spent the whole day at Versailles. The château is over the top, and the gardens are gigantic!
We found the cache with little difficulty. The contents are, to put it politely, a little sparse right now. (It would be nice if the owner could come back to restock it with some goodies sometime.)
If you ever have the chance, Versailles is well worth the visit. And don't neglect the gardens -- come visit this cache.