Akane
I hear there's a bus from Kobe city to Arima Onsen. Where do we get on it? And how much does it cost?
Akane
You can get on the Hankyu or Shinki local bus from Sannomiya station to Arima Onsen which costs 700 yen and takes 50 minutes. Or you can get on the JR highway bus (better seats) from Shin-Kobe station to Arima Onsen for 770 yen.
There's a bit more detail on this website. http://www.japan-guide.com/e/e3558.html
