This Tegami Bachi photo contains
living room, living room, sitting room, front room, parlor, parlour, lectern, and reading desk.
There might also be
dressing table, dresser, vanity, toilet table, drawing room, and family room.
this is like a little chibi version of Letter Bee, but more like if they were in school. I don't know what they're saying, unfortunately it hasn't been subbed.