I just tried a soapland (turkey style massage) 'Silky Doll' at Yoshihara last week. The quaity is so-so because it is only some sort of 'economy class'.
I can speak fluent Japanese therefore the shop guys as well as the girl did not recognize that I was a 'foreigner'. The girl told me a lot of updated information about Yoshihara.
1) many soaplands still completely refuse foreigners
2) some shops gradually accept foreigners (like 'Silky Doll'), but you have only limited choices because many girls still do not like to play with foreigners
3) although the shops may have 60min -120min courses, they only provide the shortest course to foreigners
4) even you take the shortest course, the service will be minimum
5) definitely BJ with condom (while Jap are without condom) and basically no back side play because the girls cannot see what you are doing behind her.
Anyway, Silky Doll accepts foreigners and she provides a 70 min course which costs you 25000 yen. Howeve, no gurantee about the girls' quality since not too many girls accept foreigners.
www.s-doll.com/silky/
good luck to you.