It's a C/O (Care off address) so the building is most likely a brass plate company residence. This is not uncommon. They're decision to register in Switzerland is probably due to a better tax rates and the fact it's a mecca for finance (think Wolf of Wall street) which might suit any legal delectation of monies raised during the ICO.

http://www.businessdictionary.com/definition/brassplate-company.html