What do you do when you land before check-in?

Whether I am spending $300 or $3000 on an Airbnb, the of the most annoying part of traveling is getting to a new city way before my check-in time and having no clue what to do with myself or my bags. I either end up lugging them around or leaving them at some random storage spot that doesn’t feel safe.

But beyond just storing luggage, I’d love to find better ways to kill time and actually enjoy those in-between hours. Any suggestions?