I signed up for a lesson through Groupon and am glad I did. I had a lesson with Andrew Marcus, owner of this business. In one lesson he gave me constructive advice on how to change the way I hit the ball. He also gave good directions for how to serve with some power and still get it in the box.
Andrew is moving to Austin, TX which means that he is no longer available to teach but I plan to sign up with another instructor & am hopeful that s/he will be as good as Andrew.