One of several rooms all gussied up for visitors. From the nearby plaque:

These rooms were assigned to officers, who sometimes brought their wives and families to live with them. Officers were given rooms based on their rank. The commandant and other high-ranking officers on Pea Patch Island lived in houses outside the fort. A three-room suite, consisting of two bedrooms and a parlor, would have gone to a lieutenant colonel or a major. Other rooms were set up for officers who were just passing through for a few days.