If you're located in the northern part of Berlin, make sure to check out Arnos Weinladen right outside of Berlin's city boarder! (links below)
It is run by its namesake Arno, who worked as a som for many years - including at the two-star restaurant Atlon Esszimmer! The selection is fantastic - rather classy if you wanna call it that - and you can also enjoy a bottle right there.
Great people, great wine! 😍
Google Maps: https://maps.app.goo.gl/butoZvn1Xm7bXwJ8A
Website: https://arnos-weinladen.de/