I tend to use this salon for convenience as it's so close to my work, and fairly good value considering how much you can end up paying for threading elsewhere. I've had the same beautician treat me a couple of times and she's polite, but can seem a bit rushed.
The beauty therapist was lovely, but didn't ask me to stretch my skin out during the wax (which you'd think was an obvious thing to do) and it was the first time I bled from having an underarm wax! She was polite and didn't take too long though. It's also a bit weird that you're just curtained off and not in a private room, so you can hear the conversations (and waxing) of other people going on around you.