Not bad. I especially liked the music and sound effects which are important to build atmosphere.
Something that might be improved upon: The objectives weren't always clear at first. I wasn't sure what happened when went through the door labeled "RC." I'm guessing that I went to work? Maybe adding some dialogue as to what the character wants/needs might help with that.
If ever you decided to expand upon the project or create a new one, here are a couple things I think the game could be enhanced with: More interactable items (like the computer, the fridge, stove, sink, bathroom, etc.). Maybe even interacting with the neighbors, or being able to hear footsteps/talking/tv above or next to your apartment.