I've gotten my hair colored here twice and both times left thinking my hair looked "enh"at best. My hair pulls red really easily so it takes time to properly color so that it doesn't look brassy. The first time I had my hair colored it looked decent and ashy but the highlights looked dumb and not very natural because they were very stripe-y. The second time--with the same stylist--my hair turned out pretty terribly. It looked red, pink, orange, still grey in places, highlights not done closely enough so I had instantaneous roots, etc. It really looked pretty bad. I'm not returning. Karen was my stylist both times and while I liked her a lot, she was unable to do a good job with my hair.
The staff working the front desk, for what it's worth, isn't the nicest either. They seemed a bit snooty, like they were too good to be doing what they do. I always felt like they were eyeing me up and down (and that I didn't measure up) whenever I visited.
On the plus side, you usually don't wait long and the appointments don't take forever either.