We've been to Brisighella twice. The first time was 22 years ago, just for one night while driving from Venice to Sicily, but we ate at an excellent restaurant and found the town charming. We went back a few years ago and hunted for the restaurant, but couldn't find it, but we again enjoyed the town, especially the Via degli Asini (Donkeys' Road) --- it's a 2nd floor, indoor road that was used for transporting stuff by donkey and is now very, very uneven, but fun to walk all along with big arched windows along one side. People now live on this unusual "street."
I don't know what season you are planning to visit this area, but if near Christmastime, do visit or stay in the nearby town of Portico di Romagna. The citizens, schools, businesses, local artists and other groups go all out to fill the town with homemade manger scenes using all sorts of materials, some beautiful, some recycled, some wacky, all creative. We stayed at Al Vecchio Convento for 5 nights and enjoyed it very much. There's a beautiful old stone bridge and, at least when we were there, no cars in the town.