Stuck in Frieburg

So,we were going to try to go to town of Rothenburg. Rick Steves say its a great place to visit. We had our train reservations made and all we had to do was try to find some where to stay there. We email the only hostel in town and there fully book for the next two days. So we decide to go the the Rhine Valley. We email seven different hotels there and they are all book too. So we're stuck in Frieburg for another night then on Sunday were going to try to get to the rhine valley.