The Forger, An Extraordinary Story of Survival in Wartime Berlin by Cioma Schönhaus (2004, translation copyright 2007).
It's 1942. Author Cioma Schonhaus and his family, who are Jewish, live in Berlin. We know that this is dangerous. And indeed, Schonhaus' memoir is sad; but it is also exciting and witty. His writing style is contemporary. It is a very good book.