Deniz Turan
Google
Lived in Reims for two years, my absolute favourite coffee/hang-out place of all. They have a good selection of coffee and tea, and were always kind enough to explain the different roasts/flavors they had at the store. It's a bit out of the centre, but if you're looking to wind down after doing a tour, or just looking for a place with good coffee, I'd highly suggest visiting here.