I can't speak for all year around, but having gone...

I can't speak for all year around, but having gone during the summer the place is a tourist trap, and there is quite poor management of the masses of people trying to enter. In my case, I had to wait almost 3 hours through a zigzagging line, to finally make it in and still be crowded by people during the tour. Its not to say that what's inside isn't worth seeing, but you would likely be better off skipping this and spending your time doing something more valuable around Versailles or Paris.

One more thing I found funny, is that if there could have been a reservation based system to enter, or even numbered tickets to wait on, people wouldnt have to wait in lines, and could be for example shopping in town.