Anyone got a recommendation for a dry cleaner in Berlin?

I'm wondering if anyone can recommend a dry cleaner who they know and trust, particularly for items like silk? I've had negative experiences in The Netherlands in having some silk shirts ruined and don't want to repeat the experience. I considered Zip Jet but can't find reviews on this point, and the dry cleaning form at my hotel specifically warns about treating silk items, so I'm scared to try them. Thanks in advance!