Broken Sword Wiki
"How do I find Nurse Grendel's Ward?"
"Down the corridor on the left, turn right at the Senior Consultants' Washroom... and right again at the executive Coffee Lounge. Bear left past the Administrator's Sauna and turn left at the end. That's J-Two - and good luck!
-George and Elsa

The Administrator's Sauna is an unseen location mentioned during the course of Broken Sword: The Shadow of the Templars.

Elsa, the receptionist at the Hagenmeyer Clinic mentions the Administrator's Sauna as a location to by-pass on the way to find Ward J-Two. It is possibly one of the rooms in the same area as the ward. When entering it, George will return back into the area that you attempted to enter it from.