The game is excellent, I loved every part of it, the gfx, the music, the atmosphere, the story and the puzzles.
Game really bring the oppressing part of those Mac-Venture games, I love these games because they are essentially dungeon crawlers with actually great dungeons where you're checking for loose tiles and such and this game excels at being that, it's not exclusively about death and being alone even if these things are important too.
I think the difficulty is fairly on point, with double hints used with parcimony and in the right places.
Not sure I really used the blue key to the door where you're meant to, I only found the spot at the very end (I missed to pick the hook) and the door was already opened for a very long time. Also examining the genie's choices gave me "Exam Fail 2" message.