It looks like taking the Sakurayamanami Bus to Arima Onsen is now up to 1,580 yen cheaper.
(Info provided by Iroha @ Nishi2 sp)
Quoted from Fares and Special Tickets | Nishinomiya City Website
In other words, here’s the deal.
Up to 4,250 yen → 2,670 yen = admission ticket to Taiko no Yu at Arima Onsen + round-trip ticket for the Sakurayamanami Bus
That’s about a 37% discount. Pretty affordable.
The period is surprisingly long, running until March 31 next year. However, it apparently cannot be used on closed days or excluded dates, so here they are:
[Excluded dates] May 3–5, 2024; August 13–15, 2024; January 1–3, 2025
Looks like you can use it during Golden Week except from 5/3 to 5/5
Tickets are sold here:

Quoted from [Let’s Ride Hankyu Bus] Direct from Nishinomiya to Arima Onsen! Great-value set with admission ticket to “Arima Onsen Taiko no Yu” | Hankyu Bus
There are rock baths, Goemon-style baths, six types of open-air baths, and more. If you want to see what kinds of hot springs they have, everything is listed on this page of the official website. It might be useful for planning Golden Week and such.















