the best way to think of this game is a "dear ester" with puzzles. i has a wonderful atmosphere, great visuals and brilliant voice acting. the puzzles themselves are never too challenging but neither are they insultingly easy.
however it's not all good. the pace of the game is excrucinatly slow, if there was any game that needed a run option this would be it. this is made all the much worse with some of the backtracking you need to do in the game, either to get to the next area or search for that last piece of the puzzle you missed. there are several set pieces that seem to take way too long (such as doors opening) and even some of the cutscenes which didn't really add to the story.
unfortunatley steam only has a like and a not like option with no inbetween which is what i would give this game. if they can sort out these small issues would deffinately be a like.