The Detmold Hochschule is fantastic, it's a one hour train ride and they just got a new bass teacher replacing Paradzik. I don't know who actually got hired but I suspect it was Wilezol, first principal bass with the Dresden Staatskapelle. Wilezol is an incredible player, truly exceptional. If it is indeed him, you would do well going there. Detmold is a beautiful and dreamy little town, with a castle and a prince etc...
If it is somebody else, it will probably be a first class teacher/player. Teachers are very well paid in Detmold (they set their own salaries) so they usually get top people. It's one of the very best schools in the whole of Europe.