Where is Mt. Gox now?

[Nagle]

Mt Gox claims to have moved their offices to Cerulean Tower 15F, 26­1 Sakuragaoka­cho, 150­8512 Shibuya Tokyo. They've used that address before; it's a short-term office space rental / virtual office location. Here's office rental info.

It's possible that Karpeles is holed up in there (they have enough building security and enough building exits to avoid protesters), but I doubt their whole staff is there. So where are they?