1999
Suzann Heinemann founds with industry partners the "Gronowsky & Co. Hotelconsulting GmbH" with the focus on marketing & sales
2001
Foundation of the marketing cooperation "GreenLine Hotels" with 7 hotel projects from Hotel Consulting
2003
Frank Heinemann joins the company as the second Managing Director, bringing with him a valuable addition in the commercial area, in controlling/reporting and in strategy
2003 - 2015
Managed approx. 40 hotel operations, prepared 60 analyses and advised 50 hotels and restaurateurs
2015
Purchase of Schlosshotel Blankenburg in the Harz Mountains (66 rooms, conference, wellness and restaurant)
2015
Focus on sustainability and co-development of the GreenSign sustainability certificate
2020
Consulting expands its portfolio to include other sustainable focus areas and green marketing, and is renamed "Hotel Consulting Green Solutions"
