if youve built the kit according to instructions, and provided the roof overhang on the lower of the two buildings is even (centered), it really only fits one side. on the "other" side, not so much. on this "other side" you can lift the taller building and tuck the roof under the taller building's roof overhang, but, because of a decorative point on the roof trim, and the tile cap on the ridge line of the roof, of the lower building, its close but not quite right. (if you can live with the two bases being off about 1/16" in level, no alteration is required. )
The above and the fact that the baseplates have a cobblestone pattern that runs from one edge to the edge of the other, this kinda makes one side a better fit.
otoh, imho, this cobblestone pattern, is a minor issue. On mine, i actually spray on adhesive, and add soil and a bit of ground cover, as well as inking the cobblestones to highlight, add interest and make them less plastic. Obviously, you could entirely cover the cobbles with something, tiny gravel, etc., , if this is an issue to you.
when the waiting room is on the "other" side, and provided you didnt want to alter the structures to allow for this to fit, there is about a 1" gap between the two baseplates. One could fashion a filler strip fairly easily for this gap. This imho, is the path of least brain damage.
HOWEVER, you could turn the whole dam thing around, putting the "platform" area away from the tracks, and create your own platform. This could be at ground level, although making it look integrated would be a bit of work, i think, or, the platform could be slightly raised to the level of the doors and cut to fit the walls of the two buildings.
Or , you could remove (or not glue) the roof on the lower of the two buildings (if feasible and practical) and allow it to shift to one side so it fits.....
ah the permutations ........
