my tips:
Gasthof Adler Wahlwies (upscale regional cuisine)
Gasthof Auer Nenzingen (very tasty, home-style regional cuisine)
Rotisserie Pferdehof Bodman (very inconspicuous, but THE insider tip in the village. Finest dishes, prepared with lots of love)
Blauer Affe Ludwigshafen (nice ambiente, first-class food, great wines)