Kurama hot spring
https://gyazo.com/1f7774227f7817d216bce0ff2db0a7dc
N35.1192515,E135.7765492,Z15 くらま温泉
A short train ride to the north and you can arrive at Kurama hot spring
It's small, secluded, and completely surrounded by nature so it's a great departure from the busy city
The entry fee is very reasonable
Be careful to follow the etiquette signs and guides they have posted to avoid a mishap if it's your first time in an onsen (natural hot spring.)