I liked the demo overall. I was surprised when I left the hideout and found myself not in the slums xD.
The pickpocket mechanism is awesome! But I had an issue when I was pick-pocketing the old guy and he turned around told me something and Link just froze, he didn´t move, the controls didn´t work... (but that only happened once, then it worked perfectly)
The controls are good, but they could be better, personally. I would change them to:
-Arrow keys: walking
-A key: first item
-B key: Second Item
-D key: sword? (The sword could be put on the item slots like in minish cap)
-W key: roll (right button for menu like in minish cap)
-Q key: (Left button for menu like in minish cap)
-X key: start
-Z key: select
I have the controls like that in the GBA emulator when playing minish cap and it works really well. But hey, that is just my opinion.
Although, what you could do is let the player change the controls as they like.
But it was good, especially the thieves hideout