Optionspace, a new Berlin-based startup, sees its official launch today with a service that is something akin to an ‘Airbnb for office space’. Specifically, prospective tenants — which, of course, includes startups — are able to rent furnished and unfurnished office space via the online service for short durations, starting from a one month rental period. It’s already rolled out in Berlin, Munich, Hamburg and Frankfurt, but Optionspace says it plans to expand to further