And it makes sense - don't we all have a memory of being tired and bleary-eyed, nearly falling asleep in a hotel lobby while we waited for our room to be ready? It's one major appeal of staying in an apartment or renting out an Airbnb - if your flight gets in at 6 a.m. and you didn't sleep a wink, you can walk right in without waiting for a previous guest to vacate or the cleaning staff to finish sprucing up your room. Flexible check-in is also a dream for business travelers, who might have a meeting soon after arrival and would love the chance to shower, change clothes, and drop off their luggage. Get the full story at The Huffington Post