I love Pure and Simple - I've only been to the Yonge/Eg and Yorkville locations. They give really great facial and the aestheticians are always so educated and gentle.
The front desk staff have been pretty good, a little less educated about products, but that's to be expected.
I go for a facial every few weeks and love it. The only, minor thing is the locations don't feel spa like, which is fine because once you're getting your facial it doesn't matter. The facial rooms are dark and cozy to make you feel more relaxed.
I have most of their products as well, which are great because you knew they are better for you than anything full of chemicals or fragrances.