Until recently I was the Director of Cardio and Team tennis at the Bay Club SF Tennis and now I'm exploring the opportunity to do something for people who love tennis, but don't belong to a private tennis club (or those who want to get quality instruction outside of those clubs). 
For those who don't know me, I have taught from beginners to ATP/WTA professionals, from kids to seniors, all levels and skills. Additionally, I'm certified in almost anything there is, Cardio tennis, High Performance Training, Situational Training, 10&under tennis. I'm also a professional racquet technician and customizer. Playing wise, I am still around Open Level :) 
My rate is usually between $120-$150/h and I can accommodate up to 8 people per court.
Naturally, I provide all the equipment necessary for a quality lesson and I can meet you at your local courts anywhere in the Bay Area. 
Looking forward to meeting you and teaching you tennis :)
Stefan