The story is not a cookie cutter “feel good” one, but it seems more realistic, I wouldn’t be surprised if the author based this story on actual events.

Rosa Feurmann found herself in the Hotel Polski in Nazi Occupied Warsaw as part of an investigation of Jewish partisans as to exactly what is going on in there. Rumors were afloat that rich Jews were able to buy their way to freedom using false documents. However, Rosa is detected by the Gestapo Colonel in charge of the hotel and becomes his personal servant.