I've been going to zen for maybe two years now (went there when my stylist Danielle changed locations). I've only had great experiences there. The customer service is top notch, have never seen he place dirty, I've always been greeted in a friendly and genuine manner. The salon itself is beautiful with a trendy and laid back vibe. My stylist like I said above came to the location a few yeas ago and I've NEVER walked out of there after seeing her unhappy with her work. Be it cut or color she knows her stuff a d it shows. The prices are very reasonable for the quality of the work done. The salon also offers facials, waxing, makeup applications and manicures and pedicures but I've yet to try any of those. The location is in a little bit of a shady are (west 25th can sometimes be known for the 'unique' crowd of homeless people wandering about) but that's never really bothered me.
If you're in need of a new salon and are in the north eastern Cleveland area I highly recommend zen salon