“Marcel is outstanding in bringing a business (relationship) to the next level, which results in improved bottom-line results and customer satisfaction. Furthermore, Marcel is the top in co-creating win/win solutions in extremely complex situations where “Fingerspitzengefühl” (emotional mastery) is a sine qua non. It is obvious that Marcel is very well trained and experienced in both the hard skills and the soft skills of negotiations and  customer relationships and that he enjoys passing his learnings on to others.”