Ogoto-Onsen in Shiga Prefecture is actually quite open towards foreigners, as long as you speak decent japanese. I called several shops in the upper price range (50k to 70k for 120 min.) and was never outright rejected, but told that they couldn't tell me anything specific until I'd drop by. As the location is a little bit far from either Ogoto-Onsen or Hieizan-Sakamoto stations on the JR Kosei Line they offered to pick me up.
The staff's attitude was very polite, I didn't have to pay any extra fees and got the usual discount for new customers, I just had to wait in a different room until the japanese customers had made their choice. After they made their choice I was seated in the regular area, as soon as both the other customers went upstairs the Tencho greeted me and told me which girls were willing to see me, explained the pricing and the do's and don'ts. Ogoto does get hardly any foreigners at all, so the staff is very eager to make sure that the girls are safe. Condom use is mandatory.
Oh, I won't write any specific names. But basically, if you speak decent Japanese and find yourself in Kansai, just forget about Fukuwara and head to Ogoto instead.
