This was a rehearsed reading by David Hare, which was only performed for a few nights at The Lyttelton.
The only day we could go to Berlin was the Monday; it’s 18:00 start time encouraged us to take a day off that Monday in fact.
Berlin is basically a short (less than one hour) highly personal monologue about the city, its history and in particular the Berlin Wall.
Kate Kellaway wrote it up in the Observer thus.
It is a companion piece for the Wall, which we went to see a few days later at the Royal Court. I think I preferred Berlin, finding it more interesting and less preachy.
Writing this up in May 2017, I realise that Trump should be made to sit through both pieces.