I was at a conference at The Brewery in London many years ago now, and it was a great conference. However the coffee was awful, I don’t think I have ever had decent coffee at a conference.
What was great about this conference though was outside the venue was a coffee cart based in the back of a Piaggio van. It had a full espresso machine in there.
It was great coffee and nice to get out from the venue during the breaks as well.