In many ways, I left a little of my heart in Berlin. It is a big city, full of diverse neighborhoods and lots of history. Despite not really understanding the language I felt right at home. I went in May and the weather was amazing. We had a few days of rain but it always cleared up in time for a walk around. One of my favorite things about Berlin is that everyone walks around with a beer in hand. Here in California, you really won’t see that often. It is definitely frowned upon to walk about with an open container. Not so in Berlin, everyone you pass walking down the street, whether it’s parents watching their kids at the park, coworkers/ friends walking to dinner they all have a beer in hand and I LOVE that vibe, so laid back, so me.
I was staying in the cutest neighborhood and the best hostel, Minimal Hostel. I chose to stay in a hostel since I was traveling alone and wanted the opportunity to meet people and hang out with them. In the neighborhood of my hostel was a cute craft beer bar, Lager Lager. I hit this spot up a few times. Always bustling with many people and a great spot to pick up an interesting beer for later. 
Another spot close to where I was staying, O.T. Bar Und Projekt Raum was another spot with good wine and beer! Very cool interior also.
Another fun spot for cocktails is Geist Im Glas, this is a super cool place where you can tell the bartender what flavor alcohol combo you like and she will create a drink for you! They have a great outdoor area but after a certain time, they ask that you head inside as to not disturb the neighbors. 
Another great place for green juices, coffee, tea and various food is the Marheineke Markthalle on Bergmannstraße. I like going to markets cause I can point to things I want if I am not sure how to say it in German.
I loved the Brlo Brwhouse – so much so that I went to it twice while I was in Berlin. It is in Victoria Park which was a really cool spot to people watch, bike, walk and relax!
In Summary, a few places I really enjoyed for a drink are :
toastedbunz 