It is a good game as usual, but I'm still missing some kind of deeper story that would connect the individual chapters together. Background of the protagonist, his motivation, stuff like that. You hint something in the description, but nothing from that really shows in the game.
The music is fine (could be longer so it doesn't repeat as often though), puzzles are interesting - not too easy, not too hard.
It just might be good idea to update the clothes hanger a bit, because both its in-game model and its icon in inventory are quite hard to see. Then, it would be really helpful if the map showed not just the rooms, but locked doors and their colours as well, so we can locate them more easily after finding a new key.
I've also encountered a bug which made me start the game over - if you don't get the jewel in the toilet room ("A") during your first visit, you have to restart the game, because trying to enter the room for the second time sends you to the Dues Ox screen ("C") instead.
And I think by now you must have already taken a photo of every deserted building in the country. :)