I'm a sucker for good UI design and this game is a shining example how to create a nice looking AND functional UI. This is tied to the outstanding art design, the game is just a joy to look at. The visual style is both distinctive and pleasing.
As for the gameplay, there are good foundations, but there's not enough depth. The game is fairly rigid when it comes to interactions with your staff and the hotel guests, which leads to a rather dull gameplay loop. Once you've figured it out, it's just the same stuff over and over again.
The renders are very good, my only nitpick here is that some of the facial expressions look uncanny. But overall, the 3D work is solid. The story is quite intriguing, even though it starts with one of the worst tropes (daddy dies). Progression is completely linear, you unlock new events by meeting certain requirements. There are no branching paths, which is fine, but a bit boring. The main plot revolves around a mystery, I like it. The relationships with the characters could be a bit deeper, though.
When it comes to upgrades and cards, there's also room for improvement. The staff traits are a great idea, but there aren't enough unique types of them. Most of them are small buffs. The whole guest mechanic could use trimming - especially the "pick the correct food" dialogue is silly and unnecessary.
I love management games in general and I think that there aren't enough good ones out there. This game here shows lots of promise for the dev's future projects. He's got some serious talent. Even though I have criticized quite a few things, I really enjoyed playing the game!