This was surprisingly fun, excellent work!
The only things I'd like to see changed/updated for the future is let the player "interact" with some items more easily, like the bed; and make jumping easier for some of the puzzles involving jumping on things.
Definitely looking forward to the next part of this, you did a phenomenal job nailing the atmosphere and I don't think I've ever seen a Slender game set in a city, it's a nice change of pace.