MudGuard, I agree - if no Mudcatter is actually living in the place that would make the arrangements so much more difficult.
(Just thinking aloud!)
There are at least two Mudcatters in Berlin, also, I have friends there I could ask for help with arrangements. It's not exactly in the center of Germany, but easy to reach by road, rail and air.
Then there is Hamburg, not exactly in the centre ... but easy to reach ... AND I live near and could help with arrangements.
Muenster would be nice, with a Mudcatter in place ... - except for the fact that it is more difficult to reach by rail (?) and air.
Difficult one ...