Berlin. What a cool city. It's like my favorite parts of SF (so many places with free wifi. So many cool cafes. Startups everywhere!), DC (pretty, well-organized government town with lots of green space), and Germany (Clean and amazingly connected public transit that works! Super bike and family friendly!) all mashed up. Granted, I don't know what winter there feels like, but our trip in late October was pretty perfect. We flew from Frankfurt Main to Berlin-Tegel, and learned that it's way more efficient (even with a stroller) to take escalators - we had to take a total of 4 elevators to go up 5 floors thanks to the silly design of Fraport. Ugh, Fraport... Anyway, once in Berlin, we took the 128 bus to the U2 stop (there are no elevators or escalators - important if you have a lot of luggage), and it was a straight ride to the Hotel i31 in the Mitte. It's a bit of a walk to central Mitte, but well connected by public transit and the price was right around 82 euros