We think you've succeeded both with coming up with a creative concept and implementing it well!
The controls feel natural and behave exactly as expected. Nothing feels finicky or janky, it's a smooth experience!
The trickiest thing to understand for us was that it's ROOMS that you place, not doors. Perhaps letting the doors to each room have a unique visual could help with that? Once we took a moment and really studied the map and what was going on, things became clearer - Though that took a while on account of the time pressure.
One suggestion we've got is to wait a bit longer before starting the countdown - maybe after fulfilling a request or two? Giving the player some time to familiarize themselves with all aspects of the game - placing rooms, navigating, and requirements - would be helpful. The time pressure makes it a bit hard to really take everything in, which lead to us having a tricky time figuring out the mechanics or noticing the map properly.
We really like the visuals! You've got a very cohesive art style, everything fits well together and feels like it belongs in the same game. Making every room distinct through their palette and patterns was a great choice!
Overall really nicely done!