Very interesting premise! Some other commenters have offered good praise that I wholeheartedly agree with. I'd like to call attention to a few places that I think could use constructive criticism.
Right now, the clown and crawler have sounds to tell you when they've arrived. I believe a game should still be playable even when muted. A spooky visual just before the crawler shows up or leaves, and one based on distance to the clown would make the game a lot more accessible.
Speaking of the clown, I will admit that I had to look up a video to learn how to deal with it. My first reaction was to stay away from the music box sound. There is a piece of paper on the door that explains things, but that can be missed - perhaps if the paper was placed inside the house? Or on the door.
I absolutely loved the huge circle of paving stones around the well. Even when in full darkness, I could always tell where the well was based on either its fill prompt or the sound of rocks under my feet. That's important for a place that you're visiting constantly. I also really liked that the house stays lit at night, which is good for getting oriented. Very good game design!
Small nitpick, but I definitely think that lamp oil should increase in price with every purchase. If you use the lamp carefully, by the time you actually need a second refill, 24 coins is very inexpensive. Making the price rise over time would build tension and encourage escape.
The other big criticism I have is the ending, or more specifically the lack of a crescendo. The boat needs four gears. Since you can only hold two at a time, I was expecting the game to get harder once the repairs started. I even saved 4,000 coins just in case I needed to leave quickly. The progress bar for fixing is a perfect place for a jumpscare, or for introducing some final test. Not difficult, just tense. It shouldn't kill people unless they really mess up...
I really liked how nighttime, the clown, and the deer made the game harder over time. Unfortunately, after learning from the deer, the game is basically won (unless you make a mistake). I do still like the current ending... I was tensed all the way through, but a final challenge would have been very satisfying.
I may sound like I'm being hard on this game, but I promise that's because I love it so much. The polish is incredible. I just couldn't put it down until I'd beaten it for good.
Thank you so much for reading. Cheers!