The colors of the lines are very hard to see, especially for people, like me, who are colorblind. You should make the lines thicker so the colors are easier to see and distinguish between.
When you click on the first hotel room door, he doesn't finish his sentence before he enters. He says "What kind..." and that's it. I'm not sure if this happens anywhere else in the game since I haven't gotten that far.
Why are people down voting comments about needing a mute button? I also agree that the game needs a mute button. So what if the game is based on music; some people, like me, just want to listen to their own music while playing.