The initial NLRB ruling about that allowed proceeding to the election is located at http://www.nlrb.gov/nlrb/shared_files/decisions/dde/2005/5-RC-15807(1-19-05).pdf
It's an interesting read, as there was a proposal that because the dancers were not full-time, they could not hold the election. In addition there is discussion about the two dancers who serve as rehearsal assistants and whether or not they were supervisors (and therefore not part of the bargaining unit). I think the company has put itself in a precarious situation by not renewing the contracts of the only two dancers who testified to the NLRB. This will be an interesting story to follow.
I also looked up the maximum per diems the gov allows for Italy. It's a wide range depending on the city, but I did find that Florence was listed at $151/day. I was initially figuring that there was some fudging going on with facts and that the room rates were combined with the ME&I rates, but, no, if housing was included the amount suggested would be even higher.
One thing, however, I learned years ago from people arguing in support of the CONUS rates for this country to be the rates by which a dance company follows is that if you are arguing for the top dollar numbers....you better be equally prepared to follow the standard for the locations that the government says are less expensive. It can, and will, get you the other direction as well.