Fanmail.biz

Hello!
I'm in the US and I know that Mr Hiddleston is currently filming in Louisiana. I was wondering if it would be possible to get an on-site address for the filming location, in order to send a fanmail letter and picture to him to sign.
(My reason for asking is that I have a piece of artwork that I would like him to sign, but I'd be disappointed to send it to his agency and only receive a pre-signed photo in return)

Thanks for your time!

I too would love to have this information. Much easier to send within the US than deal with the management company in London.
Thanks!