I live in Zhenhu now. Su embroidery originated in Zhenhu, and the master of Su embroidery in China also came from Zhenhu. If you want to learn the authentic Suzhou embroidery, it should be said that it is better to go to Zhenhu, but I don't think I have heard of a similar training institution here! Because local girls usually learn from their mothers or relatives, most women in Zhenhu can embroider. In addition, it is not very convenient for them to study in embroidery street, because it is a long-term process after all. It's quite troublesome to go to Zhenhu by bus. It would be better if you had a car.
So I suggest LZ find the other two.