Nuremberg - Nürnberg
HD Jensen is right (again) :-).
The goods or meeples that are "produced" by a building must be stored on empty spaces. Empty means not blocked by a(nother) building, other goods or cover cards. If you don't have an empty space, you can't produce anything. See page 9 in the rules at 4.1.
If you are not sure about the effect of a building, you'll find a detailed description on the backside of the building card. In case of the Hotel it is:
You will get 1 passenger in the
Production phase of every round unless
you cannot store it. Immediately place
the new passenger on a free Storage
space. If you do not have any free space
left, you will not get the passenger.
You never can store goods or passengers on the Hotel itself.