With a few small changes the above result can be obtained.
- changed size of roof above entrance at left
- deleted unnecessary ceiling above entrance
- used virtual visitor
- changed compass orientation and time of day
- unchecked ceiling lights in Foto dialogue
- added three lights to lighten shadows

Here is the new file: http://www.mediafire.com/download/lpwjnb6v1d2eodh/M1_L0-2+new.sh3d