May be in Berlin for 4 days in February. Not very good at navigating in a new city expecially one that speaks in a language that I won't understand. Any suggestions of day trip operators and organised walks in Berlin? I checked on Berlin walks but note that they have limited walks for winter.
Also, how warmly should I dress for February? What would be a sufficient jacket? Do I need anything like one with down feather? I am quite afraid of cold and strong winds.