On the Enterprise-D in The Next Generation, the Captain's Ready Room has a little side room that contains a replicator. Picard is often seen going into it to order his "Tea, Earl Grey, Hot".
As far as I can tell, we only ever see the little room from roughly the angle in the screenshot above. However, there seems to be more space in the compartment than would be necessary for just the replicator, as this design sketch shows:
The drawing doesn't show anything else in the room, but it's not an official sketch. (Also notice that the "captain" has hair...)
If the only purpose of the room is to house the replicator, then it would be possible of course to do away with the alcove altogether and have the replicator on a main wall, as in Janeway's Ready Room.
This begs the question:
What is the intended purpose of the extra room? Does it house anything other than the replicator? Does it have a washroom or wardrobe, etc?