Good collection of German wine regions in this article - even missing some small local tips a few more hidden recommandations can be found, e. g. red wine from famous Höllenberg (different vineries). I would prefer Domäne Assmannshausen but that is a question of individual taste.
Also the wine regions are really beautiful to visit, e. g. Rheinhessen and Rheingau on just opposite sides of river Rhine. They are the south entry to the famous UNESCO world heritage Upper Middle Rhine Valley.
Enjoy the read.