A very nice retro style urban adventure game! The limited palette graphics work really well, and the nursing home setting is cozy whilst somewhat unsettling (I find that in real-life nursing homes too). Good work!
Just a suggestion: it would be great to have true tile-based movement: i.e. you press a direction key once and then travel smoothly to the centre of the neighbouring tile. This would address the 'pixel perfect' issue that tmachine mentioned below. However, that would require quite a lot of extra programming and, to be fair, the movement system you have works well enough.