I'm playing through the ground floor, water, fireplace, back to the kitchen, basement run to the left, then back to the ground floor. Then I'm going up the left hand elevator (can't remember the name offhand), getting killed a bunch of times getting to the bedroom (usually by the glitch guy, though maybe not anymore since I finally realised how to jump properly), going through the bedroom to the bathroom, opening the locked door on the right, then walking behind the elevator and getting stuck.
Usually jumping isn't so sophisticated - it's a jump and maybe a double jump - so games that have a long press will train the player with an early obstacle (and possibly on-screen instruction text to go with it if it's that kind of game that introduces mechanics that way). I'm not sure what you could do here besides just listing it in the controls on the game page. If you make this into a longer game, or do something similar in the future, you could build an early obstacle into the game.
I'll definitely ask for feedback when I need it! I already appreciate all the support you've given my little games even though they're mainly jam experiments.