Images of wheelchairs in abandoned derelict hospitals or institutions are always dramatic and your treatment has certainly heightened the drama, great lighting. One wonders just how many patients must have been wheeled around in that chair and why, what was their illness, maybe they had had surgery, suffered broken limbs or even amputations.
Quite good. It messes with your head a bit until finally letting you in on what's happening with the characters (you find out at the very end). I highly recommend watching it alone and at night. Some creepy scenes in that movie.
If I recall it started out kinda slow and then really sped up in the second half. It really builds up a number of questions about the storyline that are very quickly answered in a few minutes at the end. I had to watch it a few times to fully appreciate what the makers of the film did with it, but I sort of like a film that makes you think a bit, so that's not a bad thing in my mind.