Ok, so the rating is lower due to bugs and difficulty progressing in the game. If there wasn't those issues I'd rate it a 3 to 4.
So it's a pretty standard corruption type story, female elf MC has to buy an expensive cure for another elf. She gets pick pocketed immediately and has to earn money to buy the cure. You can (slowly) earn money by fighting monsters (no actual battle, it's an automatic win or loss depending on your corruption level). If you choose to do corrupting actions you can earn money faster, but could end up with a bad end.
The art is good, not amazing or bad. It's just kinda standard with a decent amount of scenes. There's also no need for a full save, since you can just unlock all scenes in the gallery room (accessible right after the introduction).
The bad is the previously mentioned bugs (mostly fixed or explained around in the thread) and the progression locks. To advance the corruption state of the MC you have to do specific scenes. The problem is that sometimes scenes need you to wear the correct outfit first, while other times you automatically change outfits to what's needed. In particular to advance you have to do the church event, which locked me out of progression. You have to go to the church confessional at night, but wear the nun outfit before entering the confessional.
Honestly, I'd just suggest using the gallery rather than playing the game.