My son and daughter have been to many birthday parties here and have loved it. It is less of a lesson than other gyms in the area (San Mateo and Peninsula Gymnastics). It's sort of in between Gymboree and a formal gym. There are energetic staff members to move the party along, but there is time for free play on the apparatus. Kids LOVE their zip line and probably could spend all their time there. The price is very reasonable for the area.
They also have FREE Open Gym the first Friday of the month (You do have to pay a one time insurance fee of $25) and they do offer a free trial class.
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