A very cool (slightly touristy) yokocho in Ebisu. It’s basically 2 dozen different restaurants lined side by side in a corridor. You can walk through the area and pick a restaurant that you like and enjoy some food.
The ambiance is great on a weekend evening with a lot of people enjoying drinks and conversation. As for the food, it’s not amazing and a bit over priced for what you get. But it is in Ebisu, so I guess you just have to expect to overpay wherever you go.