I went there today (as a 25 year old well trained swede), the blow job sucked, the worst I've ever had! It was like as she was a virgin who had never seen a cock before and was afraid of it (sure, I'm quite big so she, as a tiny 19 year old with a tiny mouth couldn't fit more than the tip in her mouth).
So at first she just nibbled my cock for a while, til I asked if we could do 69, as I got bored, then made her come over and over again with my tongue and fingers.
Though she did seem to like me and all, So it's wasn't that problem, but was way to inexperienced, so it's not as she had any problem with foreigners, but an obvious virgin the way she gave me a hand job and blow job..
The worst blow job I've ever had, but as she was really hot I still stayed erect the entire 2 hours and just had fun making her come..
So I don't recommend it, but that might depend on the girls and your size..
(Note: I speak japanese so that might've helped with her actually liking me, even asking for my line (kinda like text msg) after we were done, but I still recommend you to pay the extra money for this instead, at least if you're as big as me, as they are way worth the money and I even got free sex there, even if it's technically illegal here)