This Hospital should not be confused with the Alleyway Hospital which is in a completely different area. This hospital is much smaller and is built like a maze with similar looking cross-road rooms.
Going up will take you to the bone maze while going right 3 times will take you to another room. This other room has a single unoccupied but messy bed, a broken piece of machinery, and a monitor on the wall. Touching this monitor will lead you to the underwater world.
- Based on the size it's likely this was a smaller hospital when compared to the Alleyway Hospital and perhaps the first hospital Sabitsuki visited
- Considering all the halls here look the same giving it the maze-like appearence one could infer that when Sabitsuki was hospitalized the doctors constantly carted her around trying to diagnose or cure her disease. The plain white walls all looked the same as they ran in circles looking for an answer
- Eventually may have been carted off to a different hospital (the Alleyway Hospital) which may explain why both of these hospital areas are so apart from each other but similar in purpose