会客区英文

Conference room/reception room/finance department

meeting room/reception room/finance department

Reception RoomReading Room如果房间很大，可以阅读；Mail Box如果只是存放报纸的小格子Billboard

客厅,会客室,接待室.The living room, the guest room, the reception room.

如你所说，信报间是一个放信箱的房间，那么当然，您的思路施正确的，MailBox就ok了。