What is ironic about the Chestnut Tree Cafe in the novel "1984"?

Theof the
Chestnut Cafe is simply this: in a bar, people are at their most relaxed.  Patrons go to a bar
to do what they want to do, drink, play pool, meet friends.  The whole concept of a meeting
place, bar, relaxedis mocked because the Chestnut Cafe is a completely controlled
environment pretending to be something that is no longer part of society, a place to be free. 

is drawn to an environment that should provide relief from daily life, but
the Chestnut Cafe is just as mechanical as the other aspects of Oceania. It is trap where you
are lured under false pretenses only to be subject to more
indoctrination.

"A waiter, again unbidden, brought the
chessboard and the current issue of The Times, with the page turned down at the chess problem.
Then, seeing that Winston's glass was empty, he brought the gin bottle and filled it. There was
no need to give orders. They knew his habits. The chessboard was always waiting for him, his
corner table was always reserved; even when the place was full he had it to himself, since
nobody cared to be seen sitting too close to him. He never even bothered to count his
drinks." (, Chapter 6)

Winston's fun is as meaningless
as everything else.