If you look at the basement photo showing the stairs coming down to the basement, there is a large wall panel immediately facing you as you walk down the stairs. THAT is where the door leading to the wineceller and the room just before it. In the crime scene photos, the first room you would walk into would be the room where JR's golf bag rests on a wall just in front of the wineceller door. The wineceller door is closed in the photo. It looks like BOTH of these rooms were blocked off, and that decorative wall panel with the scroll is there in place of the door.
Here is a link showing an arm opening the door that led to the rooms. It is this door that was replaced by the wall panel.
http://www.acandyrose.com/basement-doors.jpg
And here is a link showing the same area as it looked the morning of the 26th. The wineceller door is closed, and at the time this photo was taken, JB's body was still laying undiscovered behind that door.
Officer French had failed to open it.
http://www.acandyrose.com/072basement.jpg