Pennabili with respect to Bologna is very unfortunate

There is a simpler option, but more expensive: Bologna-Rimini train, 1-2 hours on the way, walk every half hour - hour. And then 45 km by taxi.

If it's cheaper, in case the difficulties do not frighten you: first the train Bologna - Arezzo, on the way 2 hours, go every 2 hours. Then you need to change at least 3 buses - it's on the road for more than 4 hours. And the last 15 km to take a taxi.

And detailed information about the city you can find on its official website - www.comune.pennabilli.rn.it.