This is a game with a huge world. The writing is excellent, with interesting historic tidbits and a fun NPC.
However, the game is full of hard puzzles that leave little room to do anything elseif you are stuck. Unlike other games with huge worlds (Zork, Curses, etc.), this game is pretty linear.
Another issue is that many of the puzzles are simply unfair. As other reviewers noted, you are required to look in places you are never told you can look. I got stuck for hours at a time two or three times, and each time was due to an invisible exit I didn't know I could use.