This restaurant is not far from the Ryokan Sawanoya, and it became my favorite restaurant in Tokyo during my initial stay in 1995. Not until a return visit a few years later did I realize that this was labeled as a Chinese restaurant (no wonder I liked the food so much!). The name of the establishment is not obviously listed on the outside, but there is a menu with photos on display for easy ordering. One time we actually had to lead the waitress outside to point at our food selections (the staff usually speaks a bit of English, but that does not apply to everybody there).
The interior has the look of a diner. There are regular tables, or you can sit "at the counter". The food selections are similar to what you would find at a typical Cantonese restaurant. The food is nothing fancy, and not as refined as what you will find at the typical Japanese restaurant. But if you enjoy sweet and sour chicken, egg rolls and beef and vegetable dishes as I do, this is a good place for a quick or relaxing meal. The entrees do not come with white rice, as there are no "set menu" meals. The soup has a good chicken broth in it, and you can get a decent fix of vegetables here.
The restaurant serves soda in small bottles, so the staff does not seem to mind if you bring in your own can or bottle. Each table has a small container of toothpicks, and I was enamored with the finely crafted design of these utilitarian items. Each wooden toothpick looked like a fancy miniature table leg! Later on as I dined at other restaurants, it dawned on me that these nice toothpicks are the norm at restaurants and not the exception.