The tour done by Mr Ziemann was perfect. We can highly recommend Mr Ziemann as a guide.
Even our kids (four, 13-18 years) did enjoy the tour a lot. Even though Mr Ziemann had the flu he guided us very well and interstingly so that even our kids were thrilled.
Competent, nice tour without being pushy, helpful with tips and flexible
Mr Ziemann had an enormius knowledge, but wasn't really able to involve our children (8-12 years).