There was one in Room77, but it was removed voluntarily due to being in breach of regulations (unlicenced money exchange service). Same reason LocalBitcoins is officially speaking not available in Germany.
Berlin is rather friendly to cryptocurrency use, however. I have spotted a number of shops with "bitcoin accepted here" posters on display.
Well, I didn’t know that. Thank you for the information. Have to watch out for those. Have a great day. :)