I haven't been to this shop since late last year, actually stopped going there any more because of a few things I have experienced.
The nana was lying and trying to sell below standards ML/WLs who were not busy at all on the day. She said the girls were pretty, young and provide good services so I should try them out. I'm sure she did it to other customers too but it made me quite upset as I was a regular back then. Maybe you should never trust those nanas running these shops (as most of them have worked as WL or ML themselves in the past).
Another reason, I kind of felt that I was wasting money considering the value for services you get from this shop compared to other well known shops like Ginza or N5M. Except for a few popular girls, they usually try to waste time by chatting and doing very basic massage or nuru. I was always offered extras by nuru only girls but often the sessions ended up with just chat and FS. For an hour session, you get more services from other shops.
So you want to book those popular ones but it was getting harder to book them and quite annoying to deal with the nana.
It may be my personal experience but I kind of lost interest...