New by StayGuest.de StayGuest, the Web-to-mailing service of Berlin-based ODS GmbH, will occur on August 19 at the this year’s MICE Day of hospitality sales and Marketing Association Germany e.V. in the Swissotel Dusseldorf as a sponsor and exhibitor. The hospitality sales and Marketing Association (HSMA) Germany e.V. organizes the HSMA MICE Day (www.mice2009.hsma.de) in […]