According to Google research, the Geisha is a symbol of
"traditional values" in Japanese culture. Gieshas are not seen as
women of ill repute as often thought. (Geisha have been confused
with the high-class courtesan of the Edo Period known as oiran,
from whom they evolved.)
The closest English translation of the proper noun "geisha"
would be artist/performing artist.
They are artisans that train for long periods of time (taking
many years of work before becoming a full-fledged geisha), therefor
they could, in some sense, symbolize perseverance.
There also seems to be a lot of secrecy represented in their
lifestyle.