Indulge to your heart's content at Hakone Kowakien Yunessun
If you are looking to try various types of onsen where you can bathe in a swimsuit, then Yunessan is for you. You can access this onsen amusement park via its free shuttle bus (approximately a 10 minute ride) from Gora Station.
One of the most popular things to do here is to try its quirky drink-themed baths, including red wine, green tea, coffee, and sake, all of which are said to be good for the skin. You can rent swimsuits and towels for a small fee if needed.
(Source: Japan Travel by NAVITIME)