I absolutely love the concept!
At first, I thought it might be too difficult, but after a few tries, I got the hang of how to optimize space, and was way more satisfying!
If I could give a suggestion it would be being able to reuse the houses in which the unhappiness bar is empty. Like if they decided to move or something and you can now spawn something cheaper there, like if they sold the house way cheaper than they got it for, but I am still thinking about how something like that could fit into the gameplay loop.
I really like the aesthetic of a board game! Was super fun!
Really cool game, thanks for sharing!