Mr. Moseby started out as a bellhop when he first joined the Tipton.
in this episode they go in to suite 613 but if you look carefully you can see it is londons room from when london see's aliens

Zack: Mommy, Cody scared me.
Carey: (looks surprised at Cody) You did? (pretends to be mad) I mean you did?! You should be ashamed of yourself! Now, say sorry.
Cody: Sorry. Gosh, you are such a chicken!

London: I've seen this ghost! It was so scary, I dropped my new purse and left it there!
Maddie: With money in it?!
London: Oh, just the regular $1,000 every kids gets for allowance (Maddie & the twins run to the elevator)

Guest: You know, many would pay extra to stay in a haunted room.
Zack & Cody: Boo!
Cody: That'll be a buck. (Cody sticks out his hand)

Cody: Either the table is getting higher, or the floor is getting lower!

Cody: It's okay blankie, will get through this together.

Cody: Did you see that?
London: You mean the face moving and the eyes looking? No.
Cody: Me neither!

Zack: If you weren't scared, then why were you shaking in the elevator?
Cody: Because it hasn't been inspected in three years! Don't you read that little card?!

Zack: If you weren't scared, then why were you shaking in the elevator?
Cody: Because it hasn't been inspected in three years! Don't you read that little card?!

Zack: What's the matter? Afraid?
Cody: No, I... just had lunch, and...umm... you're supposed to wait thirty minutes before you dive into the supernatural!

Cody: Have you ever seen the ghost?
Arwin: Sadly, no... but I have seen Muriel in a hairnet! (Shudders)

Cody: Mommy, Zack scared me again!
Carey: Zack, you know that Cody is... sensitive. Why do you try to scare him?
Zack: It's my job.
Carey: Well, you're fired.

In the flashback whe Mr. Moseby enters Suite 613, the mirror is already broken, even before Irina throws the odject and hits the mirror.

Maddie holds the pass key for suite 613, but does not use it; she just opens the door.

When Zack pulled the doorknob, it fell off, but then when Arwin comes in and demonstrates the effects, the doorknob is back on.

Cody said he just ate lunch, but it was dark outside.

Arwin: The force is strong with this one.
This is a reference to a quote in the movie "Star Wars"