guest room

noun

Origin of guest room

First recorded in 1630–40

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

An unusual message was painted on the door leading to this guestroom.
Stop Calling It Murder
Roy Black
September 10, 2011

I was told to leave my wraps in Daddys guestroom, but I was not aware that it was occupied.
Polly's Southern Cruise
Lillian Elizabeth Roy
Richard's room—she was not there, one guestroom, another—she was nowhere.
Basil Everman
Elsie Singmaster
As he spoke, Mr. Dalken ushered Mrs. Courtney to the guestroom door.
Polly's Southern Cruise
Lillian Elizabeth Roy
His room was a guestroom now, and he had been relegated to a place on the third floor with dormer-windows.
The Rest Hollow Mystery
Rebecca N. Porter
At the closing of the guestroom door Elizabeth turned and purred sweetly upon the lady to whom she had just been introduced.
Polly's Southern Cruise
Lillian Elizabeth Roy

also guest-room, 1630s, from guest (n.) + room (n.). Guest chamber is recorded from 1520s.