Yesterday I went for a nice bicycle tour in this area. From Darmstadt to Bad König:
The long and steep part between Brensbach and Gumpersberg was definitely worth the beautiful view:
Many sweet little farmer villages and nice landscape, I really like this landscape of rolling hills and a mix of open fields and dark forest. On the way back, I took the local train “Odenwaldbahn” to the Lichtwiese campus where my office is) and cycled the last bit from there. I think some other time, I might try the bit from Bad König to Eberbach.