Arima Onsen is one of the three oldest hot springs in Japan, which was established as early as 631, according to Nihon Shoki (Japanese Chronicle).
It is a street that lines up onsen facilities. Despite the modernization of Kobe, it is still a preserved treasure of the city, situated behind Mount Rokko.
There are several public baths, as well as intimate ryokan (or inn) to stay in.
Plenty of attractions and restaurants are also near the onsen, which are worth visiting for an ideal getaway. If you wish to see geisha performances, Arima Onsen can enliven your stay even more.
To reach the onsen, from Sannomiya Station, take bus or subway to Tanigami Station, then change to Dentetsu Line to Arima Onsen Station.
Alternatively, take the cable car from Mount Rokko that links to Arima cable car.
Price varies in every ryokan. It is best to visit in autumn when the deduous trees turn to red, adding beauty to onsen experience; or at winter where the onsen water can ease the coldness in your physique.