watering hole

The Japan TimesのDec.23の記事から引用します。
Christmastime in Shinjuku Golden Gai
One of Tokyo's most storied watering holes gets a little quiet during the holidays now that it relies quite a bit on tourists.

新宿のゴールデン街と言えばごちゃごちゃとして小さな酒場等が密集した場所として有名で "watering holes" は知らない表現ですが、そのような所にある酒場を示しているのだろうと推測できます。　辞書で確認します。

・Oxford English Dictionary: (informal, humorous) a bar or place where people go to drink: Champers is one of Tony’s favourite watering holes.
・Collins Dictionary: You can refer to a pub or bar where people go to drink and meet their friends as a watering hole.: I was in my favorite watering hole, waiting for the game to start.
・Cambridge English Dictionary: a pub or bar where people go to drink alcohol: The hotel had a street level bar and caf which began a watering hole of the sporting crowd.

大人の水飲み場ですね。