If you’re prepared to stay even further out of Frankfurt, then Hotel “Zum Taunus” is the other hotel I used when I was flat hunting.
Wehrheim is reachable using the Taunusbahn. Some trains go through to Frankfurt, others end in Bad Homburg where you can change to the S-Bahn. By road it is easily reached using the B456.
For more information, visit the Wehrheim homepage or call direct on +49 6081 5168.