There is one known photograph taken of the Titanics Turkish bath. The only places Ive seen it are in the books Titanic-An Illustrated History and Titanic Voices. The photo doesnt show the whole room but it shows enough to see that the
deckplans that indicate the room as being inside the ship are correct. As for the portholes, the photo shows only part of the lattice work and surrounding woodwork etc that covered them and they are identical to the ones shown on Olympic Turkish bath photos. there are windows behind that lattice on the Titanic, as the current exploration of this room mentions that they shone light through them from the corridor but strangely the light didnt penetrate into the room. This is discussed on another thread in this forum under the Current expeditions to the wreck file. As regards to the CGI, the fountain is shown against the forward wall, whereas in the Titanic
deckplans it shows it against the inboard wall. Possibly another of those last minute changes that were made. I'd put more store by the CGI pic as it is being rendered by Parks who is on the expedition and has seen the latest footage of this room.