I could briefly see folders that contained accents in the finder, but they would disappear after several seconds, then reappear 10 seconds later, then disappear again!
...because -- utf-8...
Solution:
rsync-a --iconv=utf-8-mac,utf-8 from-files/ to-files/(Also, add the charset=utf-8 parameter to rsyncd, so it will accept the --iconv command switch.)