What was this building, anyway?
The outside shot looked to me like some sort of commercial building; but inside we've got first what looks like some sort of sitting room with a bookcase, then a lot of individual closed-door rooms off a staircase upstairs, then a large kitchen wherever it is that Onni ran to. A hotel with a kitchen for its own restaurant, maybe? I didn't notice anything like a check-in desk, but maybe it just wasn't shown, or looks different there than I'm used to.