A look at the public restrooms at Flagler College gives loads of insight into how the Poinciana looked. The "go left..." reference in the title refers to the Men's Room at the Royal Poinciana Hotel.
The Men's Restroom just off the rotunda of Flagler College. The mirrors and fixtures
are new but the marble walls, sinks and tile floors are original.
Modern urinals with original marble walls, separations and tile floors.
The toilet stalls are intact. The doors might not be the originals but all
the framing appears to be. The toilets are modern but the
overhead water tanks (top left and right) to the originals are still there.