Being served by nice volunteers + good beer selection
I have visited Cafe Retro (the one in Kbh K) a few times. and was really enjoyed the good coffee, and good selection of bottle beer and soft drinks. Volunteer bar staff are super nice and friendly and the cafe itself is warmly decorated and a joy to spend an hour or two. They even hold it open until 11pm on Sundays, which along with the free wifi, makes it a great place to work, or even have a less formal work meeting anytime. It's just the prices that are a bit high, but then it is Copenhagen after all!


