Now things suddenly got really deep xD
Since Lianna already owns a room in Eastwall's inn, the ones in Mappi Village are the only ones that give you a message when you try going upstairs, so maybe that's where your memory comes from.
I know it's kinda weird having to pay to get the heal in Eastwall when Lianna already has a room, but I made it that way so players don't feel the need to walk all the way back from anywhere just to get a free heal (I know I'd do it lol). But we can just imagine we're paying for another room for Jeanne and Mao instead, since Lianna's only has one bed.