An inn is a place to stay while you're on vacation or on the road. Inns are usually smaller and more charming than hotels, but they serve the same purpose: to give you a place to rest your weary head as you travel.
Some inns are more charming versions of hotels, while others use the word inn simply to make them sound more appealing than a motel. The original meaning of inn was "lodging and food for travelers," although today some inns don't have a restaurant or bar attached. If you own or manage an inn, you're an "innkeeper." Inn comes from the Old English inne, "inside or within."