what was it like for Anne and her sister living in the Bergon-Belson concentration camp? what were the living conditions like, and what was their trip the the camp like?

From the text:

Mr. Frank (after a pause). It seems strange to say this, that anyone could be happy in a concentration camp. But Anne was happy in the camp in Holland where they first took us. After two years of being shut up in these rooms, she could be out . . . out in the sunshine and the fresh air that she loved.