boarding; lodging — living in a place where room (and often meals) are provided; can be used as a noun or with する to mean 'to board/lodge'.
学生時代は大学の近くに下宿していた。
When I was a student I boarded (lived) in a place near the university.
下宿は家賃だけでなく食事代が含まれていることが多い。
Boarding often includes not only rent but also the cost of meals.
一人暮らしは不安だから、とりあえず下宿を探すことにした。
I was uneasy about living alone, so I decided to look for boarding for the time being.
a boarding house; lodging house — a place where the owner provides rooms (and often meals) for tenants.
駅前の古い下宿は月々の家賃が安い。
The old boarding house in front of the station has a low monthly rent.
その下宿屋のおばさんは学生たちに親切だ。
The landlady of that boarding house is kind to the students.
下宿では共同の台所を使うことが多い。
In boarding houses it's common to use a shared kitchen.