Steam and Sacrilege

This game has a big setting, with around 132 rooms, most of which are empty hotel rooms you don't need to visit.

There is a steampunk hotel with automated bellhop and clockwork mechanisms that you glimpse briefly, before a future setting in a regular house. As many have stated, this is pretty skimpily implemented. Playing it with the walkthrough reminds me a lot of Deadline Enchanter, but in that game, the sketchiness was intentional, and a walkthrough was included.

If you're into steampunk, play this with a walkthrough.