Awesome studio in Menlo Park with a great variety of classes. Fran, the owner, is so nice and knowledgeable and also offers private Pilates sessions. My sister and I have tried a private duet session with her and we also tried the $40 first month unlimited classes client special. It's really great deal and a nice way to try out the variety of the studio. The Yoga classes are great and I love that they also offer Kettlebell classes.
My favorite class here was definitely Zumba -- the teacher was hilarious, energetic, and it was an insanely fun cardio workout. There are two large bathrooms where you can change and also ample cubbies to store your purses, shoes, and other belongings INSIDE the classroom which I really like. Sometimes you get worried if your things are out by the door!
Parking is limited and can be a little crazy. You may want to park in a different lot and walk over (avoid the small lot if possible!)