One's regular place — a favorite spot (e.g., bar, restaurant, salon) that one visits frequently and where one is known.
私の行きつけの居酒屋は駅のそばにある。
My regular izakaya is near the station.
行きつけに予約を入れておいてくれたら助かるよ。
It would help if you could make a reservation at my usual place.
彼は髪の手入れをする行きつけの美容院がある。
He has a regular hair salon where he gets his hair done.