Oh Man. I hate it when that happens to me!
The Humor Was Alright...
The Style Unique...
I understand it's a short.
But was it a little too short?
If this does become a series. I'm not sure if you're going to focus on just room 18 or if that's simply the name of this episode. An intro featuring the characters going about their business would not only provide length, it'll expand other reoccurring characters without taking away from the present episode and would also provide the chance to display some background visual humor while leading up to the "punch-line" of the short.
Kudos to you & keep up the good work.