Looking good so far.
I'm disappointed that Stefan wouldn't let me play the organ : ^(
(there's even an organ.ogg SE or ME perfect for impromptu playing)
It may just be me, but when I only have 1 or 2 lines in a text window, I leave line 1 blank to vertically center the dialogue lines in the window.
Maybe add some debris in the larger maps to enhance the appearance of rot and decay.
When you get to the polish phase, consider parallax lighting. The first map would really pop with light around the lamps and windows.