I actually like this game, and had a fun time with it, but it has one major flaw that leads me to leave a negative review. I will change it to positive if they ever alleviate the issue.
I find it more engaging than most of the simulator games out there, and the gameplay is fine. The major issue is that once you "lose" your entire save is gone. Instead of actually building a library and having it grow as you play, it is all gone. There is no real reason to ever play this game again past your first sitting. Within a few hours, you will hit a point where there's simply too much for one player to handle, and then your save is wiped and you have to start over, the exact same, just again. That is not fun at all, and paying for a game that you can basically only play once, is ridiculous. There needs to be a "try this day again" option, or just a penalty of some kind for each angry customer, and then the game carries on as normal. How this is the current build baffles me. All that said, below is the video of my time playing, which I did enjoy, check it out if you'd like. I'll hope the devs fix this as there is literally zero reason to return to the game in it's current state.

Real gameplay and impressions of my first 30 mins or so: https://youtu.be/HWjRnt900h8

That was the most frustrating and awful 2 hours of my life where I wanted to yeet every other customer into a dumpster. The only fun thing about this is that I get to tell ppls phones to stfu and it WORKS.

Has a lot of promise but I can't recommend it in the early stage. I will be coming back at a later date hoping they have added more player choice and interactivity. Hopefully by then the game will have more features to convince my friends to play something longer-term with me in the game.

The game has a solid enough gameplay loop but the issue is that the game front-loads the management.
You will receive fixed parts/shelving per level, you cannot buy more, cannot redesign a large amount of it, many of the counters and desks have a lot of padding/spacing preventing overlap, but resulting in what feels like larger gaps. Especially with the lack of a guide/grid system for lining up shelving across from other shelves.

The gameplay is heavily focused on 'management in the moment', with each desk being it's own component, with a computer designed for a singular task. As someone who has worked in libraries, you check in and out books in the same area usually, at best having two counters at the same desk to help pace the influx. I would love some more strategy and reason to place value on having a sorting order for books, including customers putting books back in the wrong spot while browsing and any number of complications.

This means there is a lack of actual organisation and management. Say goodbye to most of your actual book ordering attempts, you get random extra books in the middle of the day instead of say; ordering in book-packs or any number of logistics based parts of running a library. Your best bet is throwing similar genres in with each other, because all other more involved types of organisation are meaningless when you are under such a time crunch.

I'd much prefer if you had to order in books depending on the flavour of the day/week and then work around the fact you might have too many of one genre and needing to figure out how to store them, while keeping them accessible in case they are requested.

Again, the game has promise and has a solid start, I plan to come back to it once the Devs have had time to develop features, but as it stands the game is entirely front-loaded, with no back-room management, logistics or organisation, consider it's current state closer to a rush/party game, than a store management simulator.