mountain hut (esp. one that offers lodging to climbers and hikers); mountain cottage; mountain shanty
疲れたので山小屋に泊まった。
I was tired so I stayed at the mountain hut.
昼食の時に山小屋で休憩した。
I took a rest at the mountain hut during lunch.
山小屋の予約を取った。
I made a reservation at the mountain hut.