Very nice story! The music and graphics created an interesting atmosphere. The puzzles were great, too. I got stuck for a while in the one with letter 8/10, but passed it in the end. Not anything to really criticize. The puzzle enthusiast in me wishes it was longer, but it might have a negative effect on the story.
The rooms were very empty, so maybe some level art? There weren't any furniture, for example. Seeing different objects change between old and new versions would have been interesting to see even if they had no impact on gameplay. They could have been used for environmental story telling, too.