I have been to Tongli and really like it. There is enough to spend pretty much the whole day. Easy to reach from Shanghai. You take a high-speed train to Suzhou and take the subway to the Tongli stop from where you take a tourist bus.
You can also check Zhujiajiao which is also easy to get to: https://www.thatsmags.com/shanghai/p...ujiajiao-guide
You can also check Zhujiajiao which is also easy to get to: https://www.thatsmags.com/shanghai/p...ujiajiao-guide