Just love the aesthetic you went with. Feels almost like a papercraft diorama. And the gameplay reminds me of a clicker game, where you start out doing everything manually, but then you buy things to slowly but surely have everything done for you automatically. The designs were all super cute as well. Some more variety amongst the clients would've been nice, but that goes without saying.
I could see a ton of different ways you could expand on this concept. Upgradable rooms. Buying advertising to attract higher paying clients. Clients with varying tastes that pay better if you have a particular employee. Outfits that function as employee upgrades.
Super neat.