Ach it’s not that bad. I’m aware of the murder action. But that happens in every glasgow postcode once per year
Admittedly many do introduce their sister and wife to you and it’s the same person. 
But in daylight hours and yer wits about you it’s perfectly fine.
I had considered making the predictable comment along the lines of,
an exotic trip up the hill to the fairy kingdom of Castlemilk, but correctly presumed someone else would comment on it.
This is a fair point though. Even the best areas of anywhere see the odd murder now and again - usually the result of a drink-fuelled domestic getting out of hand and violent, occasionally leading to an accidental death. Not saying some in areas like Castlemilk don't necessarily have more sinister motives, but I'd be far more comfortable in quiet-enough street where I happened to know of a killing behind closed doors, as opposed to one with dealers and addicts openly hanging about - and poor, little neglected kids playing around them.
The vast majority of massage ads on Gumtree...even when they state "This is not a sexual service."...will provide a HE for an additional fee. Some won't discuss it over the phone or by text beforehand( excuse the pun) though. 
So you're basically saying every private premise-based massage service advertised in Glasgow is essentially a rub-and-tug?
You have pity the odd one that genuinely isn't.