There are two restaurants under Tangkou Bridge. The food is good, and I often go to eat it. One is the "old place", where the environment is better and you can sit by the river. Maodou sparerib soup is delicious. There is another place on the street under the bridge called "Come to the restaurant again". I especially recommend the tofu griddle there, which is the old tofu of QQ. It's delicious, but it's a little expensive, 35 yuan.
Both stinky fish and hairy tofu are ok. They are very famous. I suggest you try them. Many people don't like them. I don't like them anyway.
There is nothing to play in Tangkou Town except hotels, supermarkets and inns. There are some small scenic spots near Tangkou Town, such as Emerald Valley, Jiulong Waterfall, Rafting, Monkey Valley and Huangshan Hot Spring.
Huangshan Tangkou Tour Tofu Inn can provide you with accommodation, catering, accommodation reservation on Huangshan Mountain and preferential tickets for nearby attractions.
Tangkou is at the south gate at the foot of Huangshan Mountain, surrounded by Emerald Valley, Jiulong Waterfall, Drifting Valley, Monkey Valley, Huangshan Hot Springs, and Xidi and Hongcun ancient villages in the distance.