I made the pilgrimage to Yoshiwara last night. First stop was Landmark, which welcomed me but wanted 55,000 yen for 100 minutes, and wouldn't quote a shorter period. Checked out Prima Donna and Kings Club; both said they didn't serve foreigners. Finally found Darling Harbor (darling-h.com). Greeted me warmly, ushered me in to their lounge and showed me a bunch of pictures. The price for 70 minutes at that time of night was 28,500 yen. The girl was indeed the one in the picture I selected, and her performance was great. Definitely a good choice for foreigners like me!