I have always wondered why hobbyists prefer to visit such spas when there are plenty of lovely independent providers providing incall options at around the same rate or $50-100 more while having much more privacy and knowledge of services beforehand.
Spa's are pretty well safer for both parties involved. The risk of getting robbed at a spa are pretty much nil. Not to mention, if scheduling gets fucked up, there is almost always a backup.
I've walked into hotels questioning if I should be there. Ive read a number of stories of guys waiting in bathrooms while the providers take the cash and threaten the "hobbyist".