Neighborliness...that's the one word definition of hospitality from Roget's Thesaurus. Sums it up pretty well I think.
And, just to add flavor...
Synonyms:
accommodation, affability, amiability, cheer, companionship, comradeship, consideration, conviviality, cordiality, entertainment, friendliness, generosity, geniality, good cheer, good fellowship, heartiness, hospitableness, obligingness, reception, sociability, warmth, welcome
Antonym:
If you infuse as much of the above (sans the antonym) into the functions of your day-to-day business...the SOP's, transactions, conversations and interactions, you'll be ahead in the game, probably way ahead.
I define hospitality as an art...a blend of flawless service execution and passionate care. Or, in other words, giving people what they want and delivering it in a meaningful way.
Like most remarkable things, the idea is relatively simple. Doing it well...that's the hard part.