It's quite cruel how Germans still keep up appearances with applying for the apartment with elaborate portfolio, full personal and financial data, letters and so on. While the only portfolio that matters is envelope with EUR 1500 in cash, or at least was 2-3 years ago and now is probably higher. 5-8 years ago it was maybe funny but now is simply cruel.
I saw it in Berlin. In two occasions I saw the realtor be openly bribed in front of all of us, although whether he took the bribe or not I cannot say. I also saw a man bring mini muffins and a personalized letter from his wife, family picture included, but I'm not sure it counts.