Child of All Nations  (English, Paperback, Keun Irmgard)

Because Kully's father has written the wrong things about his country, and because there might be a war coming (Kully's heard of some of the men involved, like Hitler, Chamberlain and Mussolini) her family can't go back to Germany.  But because visas run out, they can't stay anywhere else either.  So they keep moving from country to country and staying in hotels.  Often Kully's father travels off to stir up an advance while she and her mother stay at the hotels in hock, while bills mount up and it becomes harder and harder to leave . . .

Written in 1938, Child of All Nations is a bittersweet masterpiece of constantly flagging and renewing hope in face of unvarying hardship.