There are many kinds of Izakaya throughout Japan. There two dining styles in izakaya. Customers can either sit on tatami mats or chairs, or remain standing while eating and drinking. Before customers order, a wet towel is given to clean their hands. Next, an appetizer called "tsukidashi" will be served like an entry dish and will be added on the bill. Izakaya prepares an affordable menu sets and all-you-can-drink which is good for two hours per person.
When you travel in Kansai, I recommend that you stop by Ganko-sushi.
You can enjoy authentic traditional Japanese foods.
Ganko-sushi : https://www.gankofood.co.jp/en/