This is a very short game, solvable in a handful of moves, which takes place in roughly the same universe as Savoir-Faire (which is rather longer and more involved).
There are several ways to solve most of the puzzles, and a number of possible endings. Some endings are acceptable (you survive) and some unacceptable (you don't), but some "acceptable" endings are better than others. It's worth noting that the end message doesn't differentiate between the different acceptable endings; so if you felt dissatisfied with the way things turned out, it's worth having another go even if the game tells you you've won. (Replay is quite rewarding in general.)
I thought that the optimal way of dealing with the book seemed a little unfair and slightly implausible, but in general I thought the puzzles were quite fair.
I did like the way that even though the game is timed, things like looking and examining didn't take up time; a nice way of making the player hurry up without penalising exploration.