Absolutely loved it and wish there were more like this around. A tremendous amount of work has gone into the game - not only well-written in terms of the story, but the detail that has gone into providing instructions (so you know what verbs you can use, for example), and also the fact that the player doesn't need to be so specific when entering commands or referring to objects as some other games I've played which can leave you extremely frustrated.
Granted, there are a few small niggles and it's always a bit frustrating to make an error in a game only to find out much later that you cannot win, but no games are perfect and the rest of the elements more than made up for it. Some of the puzzles are a bit tricky so I did need to cheat on a couple of occasions!
The game is pretty big which, for me, is a good thing - I want something I can get stuck into and have time for the story to develop. I thought it was a great balance between horror and mystery. Unfortunately, I didn't beat it (although I think I know where I messedup) but I enjoyed reading the walkthrough to see what would have happened if I'd managed to win.
I had some problems working out how to save different game versions (in case you mess up and need to go back a few turns) but if you copy the URL after saving into a draft email, you can just click the relevant link to go back to where you need to be.
Overall, highly recommended and well done!