The positive: Unique art style. Strange, engaging concept. It's pretty cool that the developer did everything themselves. I enjoyed the music.
The negative: I had trouble reading some of the handwriting. I had to give up on comprehending a couple of the words. I can imagine it's even harder for younger players who never learned cursive in school to understand what's going on. The artwork is so simplistic that the context from the notes is very necessary so this made the game a bit frustrating. Playing this through to end left me with the distinct thought "What was that? What did I just spend my time on? I'm so confused". I personally don't like being left with that feeling but I do think there are gamers who seek this exact experience (and some of the other comments confirm this). I do wish there had been more to the game after escaping the room. It felt like the entire game was just a railroaded story that I was clicking through and it ended right when it could have branched out into something more player-led and fun.
Over all: Definitely unique and artsy. More of an interactive story than a game. Could have been a bit more comprehensible. Just not really my thing.