I believe that was the 3d North Carolina Hospital. It occupied the house of John Thomas White at 29 Charlotte St., and is mentioned in the CHARLESTON MERCURY of 22 Oct 1863, and 2 Mar 1864.

"Although located in just a single house, the staff of the hospital made use of every available square foot of space to accommodate patients. Cots were even placed in the very top of the house in the attic room, which probably caused hospital attendants much difficulty when moving patients." Thomas More Downey, A CALL TO DUTY: CONFEDERATE HOSPITALS IN SOUTH CAROLINA, Master's Degree Thesis, University of SC, 1992, p. 32.

Hope this helps.