Beware Wolf - S2-E2
Continuity mistake: Justin's shirt changes from the park, where it is a checked shirt, to his house, where it is a striped shirt, and again from his house back to the park.
Baby Cupid - S2-E10
Revealing mistake: In the episode where Alex has to look after Cupid by disguising him as a baby, her teacher takes the shaver off Cupid and spins round and shoves it in his pocket. However you can see he's just holding it by his side.
Beware Wolf - S2-E2
Continuity mistake: Justin messes his hair up (spiky and brushed back) after dunking his head in the potion, but in the next shot his hair is all flat and down again.
Wizards vs. Vampires on Waverly Place - S2-E26
Continuity mistake: After Justin and Juliet come back from the movie, they sit down in front of the sub station. When Justin and Juliet talk, look at Juliet's left shoulder; her sweater goes from being on her shoulder to slightly off her shoulder every time the camera pans back and forth on them.
Wizards vs. Vampires on Waverly Place - S2-E26
Deliberate mistake: Justin tells his dad he will write the idea on the white board (the theme in the restaurant/add more of an experience) yet he just scribbles, and in the scenes where you see a bit behind him, the whiteboard has scribbles instead of words where he was supposed to write.
Answer: Honestly I've been confused too. Thought the ones going down went to Justin's bedroom or to the station. Then the ones out the door went maybe to an elevator to those stairs I guess. Then the one to the side went to the lair But the freezer also leads to the lair or a secret spot sometimes too.
I think the ones in the sub shop go right up to a hallway in front of the loft, then the ones in the lair go to the bedrooms upstairs. Now there's a way to get to the lair from the loft and I believe it would be past the kitchen down to the hallway where we don't really see except in like one episode. Now what confuses me the most is the lair because when Harper finds out you see Alex using magic to open it into the lair but in every other episode you open it and it's the lair.