There is a lavatory all the way in the front, by the cockpit door, this has always been marked for crew use, it does not affect the lighted signs in the cabin for when the lavatories are free or occupied. Nor is it shown as a lavatory in the SK cabin layout diagrams.

The area in front of the row 1 bulkhead is marked as crew only. (they might forget the signs sometimes?) there is not any galley function of significance there, all J catering activities comes from the mid J cabin galley. They will generally ask you not to use that area as a passage way, and not to use the galley. I have wondered if there is some crew rest there, but don't know.
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