I've had some issues with the game, on the first playthrough after getting the key at the start I started to explore the second floor and got closed in bathroom with seemingly no escape.
After starting a new run, I got the first diary in the music room on the second floor, went in the study with the upside down table, turned into day mode to get past it, but as I returned into night mode I clipped into the table and out of the window, falling out of the map and needing another restart.
Issues aside, the concept of jumping between day and night was interesting, although the place still felt a little bit too empty during daytime