DIEHOGA Denkfabrik is one of the leading hotel sector advisory and appraisal companies in Berlin and the new federal states.  Our industry experts are available to national and international clients of any size. The high quality of our services is guaranteed by our team of professionals, specializing in different areas of the industry. DIEHOGA Denkfabrik currently has three different locations throughout Germany. Below you can find your contacts for each location.



Giancarlo Bethke, Berlin

  • IFS certified authorized expert for profitability calculations and evaluations in the hotel industry
  • Auctioneer pursuant to §34b Abs. 1 GewO
  • Mediator
  • Master of Business Consulting (M.BC.)
  • Dipl.-Betriebswirt (FH)
  • Hotelfachmann (IHK)
  • Kontakt


Frank Chec

Frank Chec, Hamburg

  • DEKRA certified authorized appraiser (building damages)
  • Member of Bundesverband Deutscher Sachverständiger und Fachgutachter BDSF e.V.
  • Construction Engineer (FH)
  • Kontakt


Stefan Kahstein

Stefan Kahstein, Brandenburg

  • Senior Consultant
  • Certified Business Economist
  • Kontakt


Banu Macar - Hotel valuation

Banu Macar, Berlin

Hotelberater, Gastronomieberater, Hotelsachverständige, Wirtschaftlichkeitsberechnung, Zwangsverwalter, Schäden an Gebäuden, Sachverständigenbüro Giancarlo Bethke, Bewertung, Gastgewerbe, beratung