>>530367030
I wanted to test it for myself just so I could see it in-game, and I managed to get the door to Other-Othermart to appear using the debug menu. You just have to switch Variable 1053 to 2, turn the Weathervane to East, and the door appears.
Also apparently the Console Edition Borders that change depending on which location you're at think this is room is actually Faraway. The borders changed from the Black Space borders to Faraway Night's borders.