I loved my experience with Secret Tour so much.
What is secret tour? It's a way of sharing Hong Kong's stories with visitors and locals alike. We did a "Secret Tour" of Wanchai while I was here. Instead of going to one of HK's mega malls, we hiked up into a condemned site to look at an old brothel from the Japanese occupation, tried local milk tea at a "Dai Pai Dong", heard the story of "Wedding card street", and spoke with the residents of the local tenements.
It's a spectacular experience for anyone who cares about more than Hong Kong's glittering skyscrapers and mega malls. I highly recommend it!!