What can I do upstairs at the Inn?

Have you been to the Travel Agency?

Solve a poster puzzle to know where to look.

Have you solved it? No cheating now.

Okay, notice how the room numbers have changed?

Is that a brick with the number 10 on it?

If only you had a tool to try and remove it.

Have you been to the Curiosity Shop?

There's nothing apparently useful.

You'll have to be a little rude to the orange cat, we're afraid.

Tap the sleeping orange cat until she's annoyed and leaves.

Take the crowbar the cat was sleeping on.

Use the crowbar on the "tenth" brick in the upstairs Inn Hallway, the one with the 10 on it.

Reach in the hole to take your reward.