I got a haircut here and I hated it...I called the salon and they were so nice, they scheduled a new appointment for me to come in and they fixed it, free of charge.  They didn't make me feel bad about it either, they were totally nice.  Now I will definitely keep going back...the space is cute, they give you coffee and tea and they have chocolates there too!  Plus, I know if I don't like something they will be very nice and help me change it.
Pros:  ambience, convenience (close to Porter Square T)
                        
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