"The café is located in the so-called Kannon-Ura area, just north of the busier neighborhood surrounding Sensō-ji Temple. It is open every day except Wednesdays from 9:30 a.m. to 5:30 p.m." - Atlas Obscura
A very old coffeehouse established more than 100 years ago, serving unique food and beverages. Of course they serve ordinary stuffs, but you had better try their signature boiled Azuki beans (Yude-Azuki). You'll be hooked on its salty&sweet flavor.