5/5 for the stylist (Nadia) and 3/5 for the atmosphere of the spa.
I used a Groupon here and I was pleasantly surprised with the outcome - Nadia did a great job with my cut and highlights! It's always risky taking a chance with a new stylist, so I was relieved that the initial description of what I wanted seemed to translate well.
The only drawback is that this place feels quite crowded and perhaps a bit impersonal (although I guess that's to be expected in this neighbourhood). It just doesn't feel very "spa" like or relaxing. More like a hair assembly line...still, I'd like to try their RMT services based on the other recommendations I see here.
Prices are competitive and they seem to have great availability in spite of being busy, so that's a real benefit.