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.htmlThat is exactly the term I was looking for. The biggest companies and most famous people in the world take advantage of them, including Apple, Amazon and Queen Elizabeth. Just look at the Paradise Papers and their predecessors.