I highly recommend JACS Institute. Japanese is not easy to learn, but after each session I feel empowered and more confident, and for me those are the most important ingredients for success in language study.
In addition, I find the instructors, Mr. Kamei and Ms. Kanno, delightful and interesting. Given their worldliness and good humor, they not only provide fine language instruction; they also give me valuable insights into contemporary Japanese culture.
Bottom line: Do yourself a favor and try a free trial lesson.