Club One

One of the best ones in my area, they have the greatest state of teh art equipment with the best trainer and great people to exercise with. I highly recommend this place for you to try just once. They have lockers as well and great place to unwind and flex those muscles

PROS: Great ambience and great people
CONS:

This is San Francisco's best fitness club. They are a large chain so if this pacticular location isn't convenient than try another one. They offer certified fintness professionals for all those who need the extra step or assistance or have something specific they are trying to target. Enjoy a day at the spa here too or take a relaxing swin the their pool.