Genji no Yu Onsen.
Unfortunately, there are not so many hot springs in Kyoto: one on the very north at Kurama, one in Arashiyama. But did you know that there is one more onsen in Uji area?
It is called Genji no Yu. Very nice and quite spacious onsen with several saunas, rotenburo, tsubo yu and many other relaxing baths. You can get there by Kintetsu line (Okubo Station) or JR Nara Line (Shinden Station).Onsen is open from 10am to 1am (final entrance before midnight). Entrance fee is just 1000 Yen. If you bring Genji no Yu pamphlet with J-Hoppers stamp, you will get towel set without chargeJ
By the way, there is Kura Zushi restaurant just next to the onsen. Any sushi plate is just 100 Yen!
RELAX AND ENJOY SUSHI!