部屋へや代だい

noun

room rent; rent for a room

Refers specifically to the cost of renting a room, as opposed to an entire apartment or house.

• 部屋へや代だいは毎まい月つき五ご万まん円えんです。

  The room rent is 50,000 yen per month.

• 部屋へや代だいを払はらうのを忘わすれていた。

  I forgot to pay the room rent.