33 years ago, during year my first year (actually 2nd month) in this business, I cleaned one of these suites.
I had a device that produced foam from a shampoo, and I used the foam with natural sponges to do the clean.
It cleaned up really well, big problem was, that although no over wetting took place, all the colours in the tapestry bled out into the white surrounding fabric.
I got away with it as it was a make or break decision that led to them having it cleaned.
Well it broke!
dave.