When I was looking at the one pic from each episode, one episode that had a wedding in the like first season, and other things, the door is on the wrong side than it was in the later seasons..

First season, it seems some pictures show the door on the side where the stairs are... But then after a few pics, the door is on the side where the stairs aren't at.

Go figure..

It's not on the wrong side, they just kind of moved it. I know what you mean but it's not accidentally there in the first season or two. They just changed it all together, but good eye.