Excellent communication, fast, uncomplicated, unbureaucratic, friendly yet correct, clear and professional. Problems are addressed immediately and solved accommodatingly. Always friendly and "on their toes".
The available teachers cover the whole range from student-relaxed to oldschool-strict and are individually selected for the child. You can also change teachers if things don't go well between teacher and student.
The only thing I would like to see more clearly structured is the homepage, which is a bit confusing, so that it would be easier to make contact (for the first time).