I went to this place a couple of years ago after an event at the convention centre.
The spa seems totally legit. I received a really good massage from a young, pretty Asian woman, likely a student.
The massage was done draped and nothing else was offered. She obviously had some training as her skills were good.
On my way out though, I spotted a milfy, slightly slutty looking Asian woman who also worked there.
Seeing her made me think perhaps there were extras available with the right person.
She would have fit in at any of the spas around town.
I haven't been back to find out though.