I visited Art Orange about 3 times, but not for over a year. At that time it tended to be served mainly, but not solely, by younger masseuses (I only ever saw oriental ones). The first one I saw was very chatty. In our discussions she suggested that they got a lot of tourists rather than locals, and hence they opened much longer hours in the summer period. In the quiet periods they are open less, and (as I discovered), if they only have only one (or even two) ladies on the premises, they sometimes wander off for a coffee or shopping.......but she said in those cases, to call the number posted on the notice on the door, and they could be back within a few minutes (nearly 15 on the occasion I did this). The other interesting news was that she said a significant number of staff were uni students......though whether that was or indeed currently is accurate, I can't say.
And in my passing there recently, I have seen it shut up several times, but also open on the odd occasion. If anyone fancies a visit they could always call in advance to check if they are open