OSI Offices offers the best prices, the most flexibility and a top K St. location. OSI has been around for over 30 years; we pride ourselves on being some of the best and most efficient office suites in the area with clear pricing. We provide you with the perfect blend of temporary, virtual, co-working and shared office support services needed to help you start, grow, maintain or expand your organization in the Washington Metropolitan Area. Our spaces for meetings are available mornings, afternoons, evenings, and even weekends. Our communication infrastructure provides phone, internet, email, voicemail, scanning & call relay services. The most fully developed temporary shared DC on demand, or 'virtual' office system in the country, with combinations of mail, communications, and office supports to cubicles, to a range of full time offices. Month to month terms, adjust plans as needed without penalty and combine plans to meet varying and evolving needs. The most fully developed temporary shared DC on demand, or 'virtual' office system in the country, with combinations of mail, communications, and office supports to cubicles, to a range of full time offices. Month to month terms, adjust plans as needed without penalty and combine plans to meet varying and evolving needs.