I went to a waldorf school as a teenager, my brother and sister went for elementary school, my daughter did 13 years at two schools (nursery through 7th and 10th-12th) and is currently running a waldorf style daycare program out of her home. My aunt taught handwork at two or three schools. My granddaughter is just starting her second year of waldorf nursery school here in Vermont. I've also worked as an administrator at a large school in Chicago. My experiences have been pretty positive, especially as compared to my time in various public schools.
For some answers to the negative sites go to:http://www.waldorfanswers.org
Waldorf schools vary a lot and so do individual teachers, so you should ask questions and look around critically.
Good luck and I hope everything goes beautifully.