If you are actually there for the massage the gender etc of the nasseuse is irrelevant.
Personally I woukdnt go anywhere near probably 90% of these places if a real therapuetic massage is what you want.
Neither would I proceed with ANY treatment if they didnt ask me a few very pertinent questions regarding possible contraindications to treatment.
The vast majority have no clue, dont care, and probably learned whatever it is they do from the girl in the next cubicle in an afternoon.
No wonder some have had serious adverse reactions, injury and even died.