If you check street view for that address it doesn't look like much more than apartments. Like I said before I would be happy to take a trip to Paris along with any other forum members if they wanted to come.
All donations from US members to go toward the trip would be repaid in full when I get my coins back.
Obviously if anyone knows of a forum member already in Paris that would make it easier but I think I can get there for about 2.5-3 btc
I live in Paris.
Yes it looks like a residential building. It might be the personal home of G. Grandval and not the place where the offices are located - but I doubt so since they are supposed to declare all offices as separate locations in the official company database (infogreffe.fr/societe.com).
Anyhow for all legal stuff it is the address that should be used.
And I might go there to see what happens if needed.
If you felt moved to pay them a visit and have a face to face conversation that may be very useful. Truth is made more plain in that circumstance. Do you have coin in Instawallet personally?