Uosan Sakaba
Dating back to the 1950s, this classic izakaya is a casual and lively place, where the third and fourth floors have tables, and the first two floors have only counter seats that are ideal for watching and chatting with the chefs. The focus is mostly on seafood, which pairs well the nihonshu on the menu. The only challenge to ordering might be your language skills, as the menu is handwritten in Japanese on the walls. However, this being low-key Fukagawa, the friendly staff will find a way to ensure that you're well-fed, even if that means pointing at other diners' dishes. Or you could inquire what they recommend ("osusume wa nan desu ka?"), and go with the flow.
