I think we would definitely make the doors slightly larger if we were to remake the game, as they are a little bit tight to jump into. Returning to the balcony room is on purpose though. The intention is to make players have to create routes throughout the board. If they could resume from the room the started the sliding puzzle in, they wouldn't have to solve any of the games puzzles. They could just move the block they are in to the solution every time.
Thanks for your feedback!