Berlin is amazing. And if you have a chance to go, Maria and Ralph's apartment is where to call home. Located in the badass neighborhood of kruezberg, next to the train and a short walk to a multitude of great restaurants and bars. Not only were they flexible when our schedule changed, but extremely responsive and welcoming. The apartment is a 5th floor walk up. So be ready for that. It's about a 45 minutes train ride to the airport, via, public transport or 30 minute cab ride, which is about 30 dollars. It comfortably sleeps 2. But can sleep 4 if you're not high maintenance. And it's best to have cash on hand in the neighborhood. A lot of places take cards, but more so cash.